-- The Home Page of the Finishing Industry
Serious Education & the most FUN
you can have in metal finishing smiley

No popups, spam, registration or passwords
on this site
current topics
topic 30998

Why not solid rhodium jewelry?

A discussion started in 2004 but continuing through 2018


Q. I am a jewelry hobbyist and am just wondering, if rhodium is used to plate jewelry and has such a nice finish why not just use solid rhodium for a ring? It seems it would be a good compromise between platinum and white gold. Is there some durability issue with rhodium?

Michael Smith
technician - Mountain View, California


A. The cost of precious metals, especially rhodium, fluctuates wildly, but it's probably fair to say it's currently about 10x the cost of 24 carat gold, or 20x the cost of 12 carat gold. Still interested?

I understand that it's also hard to work rhodium and it has a very high melting point.

Ted Mooney, Teds signature
Ted Mooney, P.E.
Pine Beach, New Jersey


Q. So, Rhodium costs almost twice as much as Platinum - of course I am interested. Where can I get solid rhodium jewelry, and if I can't, why not?

Along the same lines, why not solid Palladium jewelry? (Much more expensive than silver, but only costs about as much as 10k gold).

Sruli Federman
- Brooklyn, New York


A. Solid palladium jewelry is what I have been making for the last 2 1/2 years, and it works beautifully. I weighs a lot less than platinum so you get more rings made per oz. It is actually a bit whiter than platinum, and is much nicer to work in than white gold. You can get palladium alloys for jewelry applications from Hoover and Strong.

Elichai Fowler
- Livingston, Montana


Q. I am also hoping to find rings of pure rhodium as well as ruthenium. Do they exist? Could they?

Mordechai Xiaohiu
- Marietta, Georgia


A. Rhodium costs Price 1g= $70,10g= $490 , 60g= $2,195.
Iridium costs Price: 1g $35, 5g $145, 10g $245
Platinum costs Price: 1g $55, 2.5g $105, 5g $195

Rhodium is The most expensive natural metal. It is used in plating silver jewelry. I haven't found solid jewelry made from rhodium. It's hard to start a new trend when it's this expensive. The only idea I have on obtaining a pure rhodium necklace or bracelet is to buy the metal from a elemental supplier for chemistry sets and then pay a jeweler to make me a custom piece for me. Maybe have an iridium, rhodium, platinum alloy blend. Ratio of 5/80/15 respectively. What is your ideal jewelry metal alloy combo? I guess I should also find the melting points for these metals and density. Can they be combined for an alloy?

Jaron Krane
- Boca Raton, Florida


A. Hello All
Just to let you know I have made 2 wedding bands in 80% solid Rhodium. You have to add 20% Plat as Rhodium will break if used in its pure form; it's not malleable.
What a fantastic metal. The problem is you can only get the metal in powder form, so you have to be very careful when you place the metal into an induction smelter.

Neil Garnett
- London, U.K.


Q. If these alloys in jewelry so expensive then why are they not made privately for richer people already? And does anyone know under what condition these elements can be found?

Sophie Louise Denton
- Norwich, England, United Kingdom


A. Hi Sophie. Just because it's expensive doesn't make it good, nor mean that people are highly desirous of having it :-)

One strike against rhodium is price volatility: it doesn't have it's own supply & demand price like most other things. Rather, rhodium is so rare that it's available only as a byproduct from platinum mining and refining; so when the demand for platinum is high, there is a good amount of rhodium available and it costs a little less than gold. But when the demand for platinum drops and little is mined, the price of rhodium skyrockets because there simply isn't any available. Recently it was over $12,000 an ounce when gold was well under $1,000. Not even rich people want to pay 20 times as much for a ring, and then find in a few years that the price of rhodium tanked and it's worth less than a gold ring and they lost 95% of their investment :-)

Ted Mooney,
Teds signature
Ted Mooney, P.E.
Pine Beach, New Jersey





Rhodium is very toxic and radioactive! [No, it's not, folks]

!! If you do the research, Pure Rhodium can stain skin badly and is very toxic. Research the chemical makeup.

Google: pure rhodium

Megan Von Hoisnter
- Rialto, California


A. I wasn't able to easily find the page you were reading, Megan, but I think you've accidentally extracted this a little bit out of context. The great majority of "white gold" jewelry today is plated with pure rhodium. It's worn by hundreds of millions of people and it doesn't stain the skin and is very inert.

Ted Mooney,
Teds signature
Ted Mooney, P.E.
Pine Beach, New Jersey


A. From Wikipedia:

Rhodium metal is, as a noble metal, inert.

However, when rhodium is chemically bound, it is reactive. Rhodium compounds are not often encountered by most people and should be considered to be highly toxic and carcinogenic [citation needed]. Lethal intake (LD50) for rats is 12.6 mg/kg of rhodium chloride (RhCl3) [citation needed]. Rhodium compounds can stain human skin very strongly. The element plays no biological role in humans. However, if used plainly, without compounds, the metal is harmless.

Joseph Lunsford
- Miami, Florida


A. Rhodium chloride does not appear to be especially toxic:

Rhodium Chloride:
Rat, oral: LD50 = 1302 mg/kg
Rhodium: No acute toxicity data found.

source: NIST website

J Mac
- Santa Barbara, California

The editor's fave "coffee table book" for years now...
The Elements
from Abe Books


November 13, 2008

!! Beware! Rhodium is highly toxic and extremely radioactive.

J.C. Beckman
Artist - Vancouver Washington

November 14, 2008

Hi, J.C. Thanks for joining in, but that absolutely isn't true at all. There are probably a hundred million women wearing rhodium plated rings. I'll bet you're thinking of Radium =>


Ted Mooney,
Teds signature
Ted Mooney, P.E.
Pine Beach, New Jersey


Q. I'm interested in rhodium plated jewelry's allergenic or non-allergenic properties. I have met several people who can only wear 14k gold or better. How would they fare with rhodium plated jewelry on the average? Is it less allergenic than pure silver? More? Is it comparable to niobium?
Your answers would be of great interest. Thanks.

P Casey Willson
- Eufaula, Alabama


Q. I am thinking of making custom wedding bands for my fiancee and I. The base of the ring is made in silver that has a center trough, and the inside of the trough would be a turks head of niobium, iridium, and rhodium. Not too sure about how well this will play out, and also looking for a fourth metal, hopefully as rare as can be, to add to the turks head.
My main issue is I am unfamiliar with how difficult a rhodium wire is to braid.

Adam Lenrow
- Newport News, Virginia


Q. After 13 years I am starting to blister from my wedding rings, they are 14k gold and my doctor said I might be allergic to nickel and/or gold now. I have had them cleaned so I know it is not from anything trapped in my rings. Can I replate them with something and if so what do I use? Someone please help I don't want to plate them with the wrong metal and find out that I am allergic to it too......

Karen O'Neal
Home owner - Salem, Oregon

January 17, 2008

A. I have worked with rhodium (both metal and compounds) for many years. Rhodium is used in many applications outside of the plating and jewelry industry. Check your catalytic converter in your car and you'll usually find platinum, palladium and some rhodium.

The metal itself shouldn't be a problem except if you inhale the dust and then the problem is dust not the rhodium metal. The compounds and solutions of rhodium that are typically found in the marketplace (i.e. chloride, nitrate, Wilkinson's catalyst, sulfate, phosphate, etc.) also should pose no significant dangers except for the pH of some of the solutions.

Eric Frueh
- South Plainfield, New Jersey

June 22, 2008

A. I, too, was VERY interested in solid Rhodium rings. After doing much research and talking with many jewelers, I found out why it is almost impossible to make one:
Least of all is the cost - about 10X solid gold.
Most important is the very high melting point and poor malleability.
What this means is, the melting point is so high that it would be almost impossible to spin it into a cast for a ring before it would start to solidify. It would end up as a partial ring glob. Rhodium is ~1000 deg. higher melting point than Platinum and Platinum is very hard to cast.
The other method is to melt the rhodium into a thin flat long rectangle and bend it into a curve (a ring) and solder it shut with white gold. The only problem is the poor malleability which means it would crack and break as it is being bent because it is too brittle.

That is why I gave up trying to get a solid Rhodium ring made. The guy from London may have a point that if 20% Platinum is used, it may be malleable enough to make a ring. I suspect a jeweler would charge up to $10,000 USD to make one.

Brad Viets
- Boise, Idaho

December 2, 2008

thumbs up sign I guess after today's news, everyone has heard of rhodium jewelry. B.Hussein Obama's $30,000 rhodium and diamond ring for his woman.

Ann Jac
- Bixly, Missouri

December 2, 2008

A. I got very interested once I started reading all this questions and responses, First I have been a jeweler for 38 years and nobody that I know of has had problems or reactions to rhodium, and I use it almost daily for plating.

Gilbert Gomez
- Phoenix, Arizona

May 6, 2009

Q. In the same web search that turned up this question, I also turned up a source for rhodium wedding rings direct from American Elements, a materials source.

I guess I can't link to the site here, but I wonder if anyone has any experience with ordering rings through this sort of source, or any other information.

The rhodium rings seem to be available at 99%-99.999% purity. I don't know what the cost is, because I wanted to ask around before I contacted them for more info.

Lisa McLean
- Queens, New York

July 2009

A. Hi, Lisa. Asking for a testimonial on the largely anonymous internet is like asking a stranger to watch your purse while you go to the restroom; it might work out fine some of the time :-)

But we've received many postings where IP addresses proved they were from shills posing as satisfied customers, and in most cases there is no way of knowing :-(

For this reason and several other reasons, sorry, we don't print testimonials.


Ted Mooney,
Teds signature
Ted Mooney, P.E.
Pine Beach, New Jersey

July 15, 2009

Q. Hi Everyone,

I'm in a fairly well paid job and my girlfriend and I have discussed the group of platinum metals as she has a reaction to nearly everything. I've started my research and looked at Rhodium but this way looks massively expensive and not possible to look at anything here in the South West of England. What is Iridium like? Its properties look very inert and is it available out in the UK For general purchase as a ring (Engagement, Wedding bands)?

Geoff Hacker
- England

Rolex Rhodium Dial

December 3, 2009

A. Re: Rhodium and Palladium jewelry, HSN not too long ago sold palladium jewelry, unfortunately I guess when those in the 'jewelry-know' found out about it, it sold out rather quickly.
I'd also like to purchase some rhodium and palladium pieces myself (price aside), and believe that if there is a 'large enough push' for these 'metals', that eventually they just might become available on a more readily available scale (with perhaps even a drop in the prices).

Jeanne Myers
- Brooklyn, New York

August 14, 2010

A. Yes Obama did get his wife a rhodium ring- this was well publicized at the time he was elected, Amy. I have a rhodium rolex watch and it is the most beautiful, stunning watch I have ever seen. When I bought it I didn't even know quite the value of rhodium but I liked the look. btw just the face is rhodium. The band is stainless steel.

lin leon
- austin, Texas

September 2, 2010

A. I read that pure iridium jewelry is the latest trend. One of the hardest metals known (doesn't scratch), doesn't oxidize (tarnish) and common acids do not affect it all. Denser (heavier) than platinum but about one third the cost per troy ounce. However the cost of a platinum ring and an identical iridium ring are about the same due to the difficulty in working with iridium. A company called American Elements sells iridium rings.

Kim Kercso
- Vancouver, BC Canada

September 18, 2010

A. Hi, I have succeeded in making beautiful rings out of solid rhodium. We will shortly begin marketing gorgeous wedding bands, engagement rings, and other styles made from 90% rhodium, 10% platinum.

I have made rings out of .999 fine rhodium, but I found that alloying it with 10% platinum results in a better, more durable product.

Eitan Cohen
- Brooklyn, New York, United States

October 5, 2010

Q. Hi guys

Have been looking for a pair of wedding bands too, and while we had nearly frozen upon Rhodium-plated white gold, we got to know that the plating wears easily and would require loads of maintenance...Now we are looking for a ring that is very durable, without being as expensive as solid Platinum + Palladium...and we don't want yellow gold :( do we have a way out!

Zumi Bhadri
- Bombay, India

November 18, 2010

A. One of the above posts made a very good point. From what I've also researched about rhodium, it is too brittle to use as a ring. VERY poor malleability, and would almost certainly crack if it were sized up or down. Even mounting a stone would probably crack the mounting itself, and hitting the ring on something that would otherwise bend gold, would probably crack your rhodium ring. I think the properties of the metal more than the price dictates why making a ring out of solid rhodium isn't common practice. I'm sure there are people out there who wouldn't bat an eye about the price if they really wanted one.

Michael Rodriguez
- Blythe, California USA

December 21, 2010

A. Rhodium is ideal for jewelry. It is highly reflective (which is why it is used to plate platinum jewelry and accent gold jewelry), it is inert, it is stronger than any of the other precious metal, and it is terribly rare and therefore desirable for value reasons. It's just taking the public a long time to come along.

john volker
- watertown, New York, usa

June 12, 2011

Q. So how does one KNOW he has a rhodium ring (or other piece of jewelry)? Lacking any hallmarks or other obvious clues, how would one test the jewelry to determine if it's pure (or majority) rhodium? Thanks for any insight, and also for this helpful and interesting blog.

Ward Angles
- Arcata, California, USA

November 8, 2011

thumbsdownIf Rhodium is not malleable, I do not care how nice of the color it is, to me, is the "other Chrome" as far as I am concerned.

Ted Shngerson
Self - Brooklyn, New York, USA


October 20, 2010

Hi, one choice is to buy a tungsten carbide ring, not expensive but extremely hard.... it has a very nice polish and is one of the strongest metals known on earth. 5x harder than steel & 3x than titanium.... :)

manwel spiteri

December 26, 2011

! One thing that was brought to my attention about tungsten rings and may apply to rhodium: hardness. The ring is so hard that if there is any chance of catching your finger in some object, there is no way to cut the ring off the finger. One jeweler whom I was just chatting with said his chain realized the potential liability and stopped selling tungsten rings. I am not sure if this applies to Rhodium. Firemen as it turns out have nothing they can use to cut tungsten off a finger, except to take off the finger. I know a lot of young kids are using less expensive metals for their rings but they should be aware of the potential risks, especially if they work in a field like mechanics, etc.

R. Goodrich
- Ft. Lauderdale, Florida, USA

December 28, 2011

Thanks, R., profit motive aside, jewelers prefer precious metal rings because they better suit their sense of art and aesthetics -- but I think your jeweler is probably spreading urban legend. Abrasive diamond disks are much harder than any metal and cut through tungsten or rhodium with no difficulty. Battery operated ring cutters will cut through the hardest alloys in less than 10 seconds.

Titanium carbide, ceramic, and stone rings are brittle and pretty easily broken off with vise grips if necessary.

My son is a fireman for 12 years now, working on the auto accident extraction team, and finds "...except to take off the finger" amusing ... firemen don't amputate fingers, they remove the ring, and it's about the easiest work they do. If you have a published source for your concern, please correct me. Thanks!


Ted Mooney,
Teds signature
Ted Mooney, P.E.
Pine Beach, New Jersey

May 2, 2012

A. I always wondered about bismuth, or alloys of it. It's an odd metal like the above. And I must say, rhodium has the luster of polished cast iron.

I haven't heard you guys mention yttrium or zirconium. Zirconium is stablised by yttrium in jewelry application.

But for god's sake, do your homework before acting on this one! I certainly would advise that you forget about making a ring out of something that is rare and unnatural in earths crust. If it doesn't occur in nature much at all, then you have no tolerance to it as a human. It could cause cancer or worse. Skin is semi permeable.
And as for toxic, silver is. It just doesn't enter the body as it is nearly inert. Though, its compounds that are able to enter the body, are very poisonous, like silver nitrate. So, I'm not sure about worrying about toxic metal compounds from inert metals. Ask yourself why you want to make it, and why someone else hasn't.

Dan Percival
- Derby, UK

June 25, 2012

Q. Most of the rhodium plated items I know I've seen, I haven't liked. They look incredibly shiny and cheap to me. I have several high quality platinum pieces of jewelry and love the way those look. Why am I seeing such a difference? What about ruthenium? I've heard of that but haven't seen it. I grew up around only platinum and 18-24 ct yellow gold. Is there just a slightly visible difference that only some can see? Thanks.

Liz Perkinson
- Elk City, Oklahoma

September 4, 2012

A. Hi Liz. It's a matter of taste, and tastes change. Yes, rhodium is incredibly shiny, the most reflective metal (actually raw silver is more reflective but it tarnishes), and some people like how it makes diamonds look bigger and brighter. Some people don't like it. It's all good.


Ted Mooney,
Teds signature
Ted Mooney, P.E.
Pine Beach, New Jersey

September 4, 2012

Q. Ok so now that the price is down, is there still a reason Rhodium can't become a useful precious metal in jewelry? It looks like the comments go 50-50 as to its suitability. Looks like toxicity has been ruled out. So as a mix even to cut the total cost? Just checked and its spot price is below gold and platinum.

Nate Bayer
- Northglenn, Colorado, USA

September 4, 2012

A. Wow! Either the world economy really is going to crash and everybody is hoarding gold, or this is the opportunity of a lifetime to buy rhodium. It was 12X as expensive as gold just a year or two ago ($12,000/oz.), and today it's 2/3 of the price of gold ($1150/oz.)?!

Actually, Theodore Gray notes in "The Elements" that the price volatility of rhodium is not due just to speculation but because rhodium is not mined for its own sake but becomes available as a trace ingredient in platinum ore. When a lot of platinum is mined and refined, there's enough rhodium to go around, but when platinum mining slows down, rhodium skyrockets because it's just not feasible to mine it for itself.


Ted Mooney,
Teds signature
Ted Mooney, P.E.
Pine Beach, New Jersey

November 19, 2012

Q. About finishing Rhodium rings: The melting point is only a few hundred degrees higher than platinum -- not so bad on a small scale with eye protection.
About malleability: I prefer pure Platinum because it can be bent and bent and bent. Pure gold is pretty good, and pure Silver needs constant annealing. I'm confident I can make Rhodium bands without bending, and if annealing is required for resizing, then ...
Question: How does Rhodium fit in the malleability scale of Platinum through Silver? So far the reference to malleability has been vague.
I make all my jewelry by hand, and I've found that some files are not as equal as other files, and that Rhodium is hard.
Question: Where can I find fine files that can work Rhodium? I'm trying to avoid testing my files on Quartz to see who wins.

Luke Jadamec
- Canaan, Maine

May 26, 2013

A. I have been able to cast Rhodium rings but it is extremely difficult. The most challenging part is melting the metal as the extra 300 °C puts it beyond most Induction Melters. For Jewelers, Rhodium is so hard it takes about 12 new saw blades to cut through the sprue. RH is a beautiful, extreme white hard metal but is much too brittle for prongs. Several small movements of the metal will cause the prongs to break. In refining of PGM group, the usual results are baby powder fine powders or sponge. The melting temp. (2200 °C) is beyond most torches and the pressure involved will skater the expensive powder. Melting fine powders is very difficult for most commercial Induction Melters and continued efforts usually results in a fried Induction Melter as the powder is too fine to absorb the radiation and results with the energy returning back into the machine. From experience, this can be a very expensive experiment.

Also, Rhodium is not a very friendly alloying material. It does not mix well with other metals. Again, another expensive experiment. However, I have had some success but it goes well beyond normal jewelry manufacturing methods. About the only use that I can see is for plain jewelry such as wedding bands. Rethinking my methods and have not given up my experiments.

Dan Dement
Stone Oak Jewelers - San Antonio, Texas

September 3, 2013

thumbs up signIt's a great question, I have sought for Rhodium wedding and engagement rings to no avail and ended up settling for platinum despite not being price sensitive -- just did not seem to be accessible. As I was living in Singapore at the time I had to get the platinum in from Hong Kong and very few Traditional Indians work with that so was a challenge in itself.

What I have learnt through my work and mining engineering background is that Rhodium is very illiquid as a commodity, hence the price spikes in history, it's a byproduct of other rare earth mineral mining and not the driver. The biggest users are of course for car catalytic converters, but its still a minor for them; you try forward hedging Rhodium and see the difficulties mostly for security -- it's a buy now and lease transaction. You can see why commercial jewelers would not want to sit on inventory, or take fixed price orders on future supply, but I can't understand why there is not more of a niche market for the price insensitive. Hats off to the mails I read where people succeeded in getting what they wanted.

Alistair Jones
- Basel, Basel Stadt, Switzerland

September 30, 2013

Q. Out of all metals that have been talked about, which one is the worst toxic for skin?

Liz Otero
- Lutz, Florida, USA

Do you like free internet sites like
If you don't join the fight, our days are numbered.
January 16, 2014

Q. First off I would like to thank all those that have added their professional opinion and expertise. I am looking to see if someone can point me in the right direction to make my a highly customized ring.

I have just started my search in finding someone who is skilled in metallurgy in the great state of Maine. Because Rhodium seems to be very specific to a small group of followers it doesn't seem like anybody mainstream would seem to be able to work with this metal. As Metallurgy is such an interesting subject, one that I would love to know a little more about. I would like to know if anyone could direct me in the right direction. I'm hoping to find "mom and pop" shops since Maine is a small community of specialized workers.

After reading most of this tread I definitely feel like I understand the process better, now I would like to talk to someone about the exact process and figure out a way to achieve my end goal, getting my wife a ring made in Rhodium.

Thank you all for your time. :)

Solomon Nethers
- Augusta, Maine USA

simultaneous January 20, 2014

A. Hello Solomon,
As you may know rhodium is very expensive in its pure form. Secondly rhodium is very hard to fabricate because of it's extreme hardness. It is not very malleable. There are rings made of platinum, which today would also be very expensive. Would you consider a white gold ring plated with rhodium? This combination seems to be the norm in fine jewelry. Most reputable jewelers can point you in the right direction as far as design and the rhodium plating.

Mark Baker
Process Engineer - Malone, New York, USA

January 20, 2014

A. Soloman, this is maybe a silly question, but have you tried to see if you could get the rhodium melted down and the mixture of platinum at a good steel works furnace as they are made into bars in the first place

Jimmy Dodger
- Glasgow, Scotland

January 21, 2014

A. Solomon,
I checked the current price for platinum = $1442.00 per troy oz. Rhodium is at $1050.00 per troy. Source = Johnson Matthey platinum group daily metal pricing.

Mark Baker
Process Engineer - Malone, New York USA

thumbs up signThanks Mark. There ya go, folks, if you paid $10,000 per ounce for rhodium 7 years ago and it's worth $1050 now, you're not very happy.


Ted Mooney,
Teds signature
Ted Mooney, P.E.
Pine Beach, New Jersey

January 27, 2015

!! I recently found a mint in Canada that produces Rhodium bullion and Rhodium coinage as well. I believe the markup is 20% whereas gold is less then 10% markup. I've seen their stock and it's beautiful! As well, this is the only mint in the world at this time that deals with this metal in a solid 9999.0 fine. They are supplied by Africa. As low as prices are now, I can't think of a more exciting investment? With China and North South Korea making their mark in the automotive industry at this time with great success! Surely there will be a need for millions of catalytic convertors in our near future! I can't see this metal selling much cheaper in the future. And I'll take it as a indicator when the US President spends $30,000.00 for his wife's wedding ring during its peak? I'm willing to bet he's not so stupid to make such an investment and take such a loss with all his advisors? I've read Rhodium could go as high as 20,000.00 an OZ in our near future. Good luck with your investing. ;)

Chet Creslaw
American Gypsy Fabricator - Southfield Michigan USA

January 26, 2015

Hi Everyone

A few years ago I posted on this site. I made 2 pure wedding rings and they were the first in the UK. I also posted I would not do them again as it was very difficult to cast due to high melting point. I had the 2 rings hall marked and the customer is still very happy with their rings. I have been working with Rhodium for a while now and have come up with a great way to cast the metal, I use Platinum as a alloy and this now gives me a perfect cast and finish. The platinum also gives the Rhodium a luxurious weight as it more dense.


Here is a picture of my latest cast and will send you all a finished pic in the next week or so.

Neil Garnett [returning]
- London, UK

Want a pure rhodium engagement ring made

August 12, 2016

Q. I am looking for a pure rhodium engagement ring to be made. I saw Neil's post about casting as a Platinum alloy and I am interested to hear back from anyone working with pure Rhodium or Rhodium alloys.


Rebecca Lowe
- Hertfordshire, UK

February 2, 2017

We produce pure .999 rhodium rings. They are strong, hard, durable and beautiful. Best,

Paul Kiesow
Custom Solid Rhodium Wedding Bands - Carlisle, Pennsylvania, USA

May 8, 2018

Q. Rhodium is used mainly as a commercial catalyzer, in fact most buyers want to buy it in its powdered (sponge form). Once reduced to metal bars it has little value other than the bragging rights of saying "I own a bar." Rhodium also has a melting point almost twice that of platinum and the the finished metal is very brittle unless alloyed with another metal. Most jewelers hate working with platinum because alone it is much harder than gold or silver. The really exotic metals in the platinum metals group like iridium, osmium, palladium, ruthenium (maybe least on the list) and rhodium a giant "B" word to work with. Most goldsmiths hate working with silver because one needs a hotter torch (and it's more work). By the time one gets to rhodium, temps are needed that require an oxy-acetylene torch. Most jewelers consider that level of heat of heat out of their comfort level. Forget the price of the rhodium metal. Labor to fool with will cost twice the metal's price to produce a ring that could crack or break apart the first time you bang it against something. Do not let arrogance and the need to prove your wealth disprove good taste.

Also as electric cars become more efficient and affordable, 100 years from now when catalytic converters are no longer needed, Rhodium will probably be of less value than aluminum. There are rarer metals than rhodium. Californium is 27 million dollars a gram, Why not make a ring from it? Just store it for three years in a lead safe first, lol.

- Fort Branch, Indiana United States

Want to make 80-20 alloy of gold and rhodium

November 23, 2018

I would like to know what would happen with a 80% gold mixture with 20% rhodium?

I was thinking of making a gold chain between 18k and 22k, but I don't want to use silver or platinum. I was looking on the internet for an answer if anyone has done this before, or if it was even a good idea. That is how I found this site.

What would be the benefits and drawbacks of using rhodium in the melting process while making gold jewelry?

Sam Zachuth
- Staten Island, New York, United States

November 2018

A. Hi Sam. I'm no metallurgist and it's been 50 years since I took my only metallurgy course -- but the thing is, you can't make alloys by mixing molten metals in any arbitrary percentage you desire. Those two metals are only miscible in each other up to a very low percentage (much like you can dissolve a teaspoon of salt in a quart of water, but you can't dissolve 5 pounds).

You can use to look for abstracts of insightful articles on the subject of gold-rhodium alloys, but you'll probably have to pay to view the articles. Good luck.


pic of Ted Mooney
Ted Mooney, P.E. RET
Pine Beach, New Jersey
Striving to live "Aloha"

December 8, 2018

Q. Thanks a lot Ted, I will try to find something more on this topic by searching academic papers then. However, I guess that would also prompt me to ask. Has anyone here ever had experience in creating gold jewelry by mixing it with rhodium? And if so, could they speak about their experience?

Sam Zachuth [returning]
- Staten Island, New York, United States

December 2018

A. Hi Sam. Your thread is still here and we welcome responses from someone who knows more about the topic than me ... but what I was implying is that from my limited knowledge you cannot melt rhodium and gold together because, except to a very tiny degree, they won't mix. So, assuming I'm not wrong, you are asking people to relate their practical experiences in doing what can't be done :-)


pic of Ted Mooney
Ted Mooney, P.E. RET
Pine Beach, New Jersey
Striving to live "Aloha"

December 9, 2018

Hi Sam

Gold/rhodium has been used in jewellery.

You can find some reports of its properties here:

geoff smith
Geoff Smith
Hampshire, England

Ed. note: See also

If you have a question in mind which seems off topic, please Search the Site

ADD a Comment to THIS thread START a NEW threadView CURRENT TOPICS

Disclaimer: It's not possible to diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices

©1995-2018, Inc., Pine Beach, NJ   -   About   -  Privacy Policy
How Google uses data when you visit this site.