Letter 1237

Plating rhodium on white gold


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Ed. note; This is an interesting but long thread, and only one of many. Before you get too confused, you might want to start with our FAQ on Rhodium Plating and White Gold to get an overall understanding :-)


April 26, 2007

Can you plate white gold with platinum or silver? if so, would it rub off as quick as rhodium?

thanks,

Natalie Masters
- Manchester, UK


July 30, 2007

Gold is yellow metal in nature. we use nickel and palladium in the alloys to turn it white with bleaching effect. silver is whight in nature so it can give its colour to gold and turn it a bit white. More the content of nickel, palladium and silver, more the metal be white. but the surface it not perfactly white and shiny. So rhodium is deposited on it by electro plating process.

Rhodium is most brightest metal on this planet. But is greyiesh in nature. it reflects the base metal colour so the metal appears white and bright after rhodium platting.

You can get white, brown and yellow sports on your metal surface if the rhodium process is not done carefully or the metal surface is not cleaned properly before rhodium.

since rhodium is brightest metal, even a small scratches on your piece will be clearly visible after rhodium. so the piece should be nicely buffed before rhodium.

while plating, the person should take care of several things like, the voltace and current at which the piece is dipped in the rhodium bath, the time for which the piece is kept in the bath, the bath temperature, the piece should be cleaned properly, after cleaning its rinsed with DM water and then before entering to the rhodium bath, its dipped in acid to make the piece neutral (i.e. PH7). If this all instructions are followed properly, you can get a perfect, clean, and sportless rhodium plating on your metal.

Shah Shankhesh R.
- Mumbai, Maharashtra, INDIA


September 17, 2007

I have recently read that the jewellery industry in the UK has been aware of this problem and has recently graded white gold on a 32 point system and then sub divided into 3 categories so the manufacturer or the retailer buying white gold bullion or finished products will know what grade and colour they are purchasing even if already plated . This grading has been done through the gold council and assay office .
Grade 1 - no need for plating
Grade 2 - option to plate
Grade 3 - requires plating

Brian Fairhurst
- Northwich, England


November 18, 2007

I think the main point that is rarely recognized in all of this is: My grandmother and mother have white gold rings which have never needed plating. Why is that? It angers me to hear "white gold is made of yellow gold, which is yellow in color....bla bla bla... so deal with it." Again, why do we all have relatives with white gold jewelry that has never yellowed and never been plated? Anyway, yes, the same thing happed to my wife and I. It is just disheartening to find out that you now have to bring in your engagement ring and wedding bands for plating every 6 months.... What? So how are we going to pass my wifes ring on to our daughter? I guess with a maintenance plan for say.... 100+ years.

Brian Chirrick
- Placentia, CA, USA


November 18, 2007

It is indeed disheartening, Brian, and you are right about how big a problem it is. I've learned a lot in the last few years --

Gold is yellow. There are no isotopes that are white; that is scientific fact.

To make jewelry, jewelers mix gold with other metals because pure 24 karat gold is far too soft to be useable in jewelry. If the other metals they mix it with are chiefly nickel or palladium, the resulting mix will be "whitish". How white depends on which metals they mix in, and in what proportion. A "whiteness scale" is mentioned a few postings above.

Your relatives have rings where the right metal (probably palladium) was mixed in, and in the right proportion, that the ring came out satisfactorily white for them, and it stayed that color over the decades.

Although your relatives' rings are indeed white, they are not the brilliant shiny highly polished, diamond-like, chrome-plated-like look of what you see in jewelry stores today. That is the look of rhodium, not the look of white gold. Whether consumer-driven or jeweler-driven, tastes changed to where people now expect white gold jewelry to be that brilliant rhodium plated color. So it became nearly universal to rhodium plate the jewelry, and you won't see much unplated white gold jewelry; and if you do, you will find it quite "dull" compared to the glittery rhodium plated stuff.

My assumption is that what happened is the jewelry industry started saying to themselves "we're going to rhodium plate it anyway, why spend the extra money for palladium in the mix", so they started accepting white gold of lower and lower "whiteness" as the base, worrying about it less and less. It seems that some jewelry stores in the middle aisles of malls may even be rhodium plating regular yellow gold.

Some people love the glistening rhodium plated look so much that they accept frequent replating as the cost of getting it. I'm not one of them. Like you, I believe heirloom jewelry should not be plated. But I accept that that means it will be "white" but it will not be dazzling because a mix of yellow gold and other metals, no matter how well done, just can never be the brilliant dazzling color of rhodium. Hope it helps.


Ted Mooney, P.E. 
finishing.com
Brick, New Jersey


November 23, 2007

I am in college and my boyfriend just proposed to me and the ring already has the white gold peeling off and it looks horendous and we have our engagement party coming up. can i get it replated and about how much does this cost?

Nancy Balian
student - Wood-Ridge NJ USA


November 28, 2007

Peeling!? The plating is for some reason defective, Nancy. It might eventually wear through, but it should never peel.

Other threads in this forum indicate a replating cost of about $30 to $50 at jewelry stores, although there are plating shops which have expensive instrumentation and which specialize in plating high quality jewelry, and they might charge twice that.


Ted Mooney, P.E. 
finishing.com
Brick, New Jersey


December 18, 2007

Hello. I got engaged last December, and my ring is white gold. I work at a bank and deal with change a lot so it got pretty scratched up on the bottom, and I noticed that yellowish tint. I did my research and understand fully the reasoning for this. So I went ot have my ring re-plated. It was very inexpensive (~$40), and looked like NEW! The problem was that after about 2 months the same thing was starting to happen. I haven't gotten it replated again though. I was wondering if there was an amount of rhodium plating I could request to be done at one time (like thickness of it), to help keep it the way it is supposed to look for longer. Anybody know??

Crystal Trask
buyer - East Branch, NY, USA


January 10, 2008

My wedding set is of white gold. I take my set in annually to have the rhodium placing done. From what I've researched and from what I've been told, white gold loses it's "white gold" color due to various reasons...chemical reactions to skin, chemical reactions to lotions, soaps, etc...also from salt water and just age. I fish and camp often so my rings get dull quite fast. If you purchase your rings with a warranty, the warranty coverage should cover the rhodium plating on your ring. The rhodium plating also help get rid fo scratches. I just picked up my set today, takes about a week or so and about $35.00 per ring. They come back looking as if your rings are spanking new. I highly reccomend getting the process done annualy.

Gwendolyn
- Richmond, VA


January 12, 2008

white gold sucks..after all the money ive paid for my rings I am almost sick that it looks so dingy after a few weeks..I have been told so many things- ohhh its having a reaction to your finger! Oh, all metals tarnish..! Blah blah blah..its all a bunch of crap. Then, the other day I went to get the rhodium plating done, and they told me that i could not because it will damage my ring!! Meanwhile, I have been sending it away to get the plating done for three years..

Go for platinum..spend the money..or, just get yellow gold..save the hassle..

Anastasia Beaverhausen
buyer - Omaha, Nebraska, USA


March 6, 2008

I've been reading some of the comments. White gold does not exist. Gold is yellow, no other color. It's Rhodium plated. You can go to the jewelry store and get it rhodium plated every year, for about $20-$40.
The yellowish of ring is the gold and nothing else.

Nathalie Torres
- Winnipeg, Canada


March 6, 2008

Not quite true, Natalie. Because this issue is very confusing spread across hundreds of postings, we've summarized it all for easy reading as our FAQ on Rhodium Plating and White Gold.


Ted Mooney, P.E. 
finishing.com
Brick, New Jersey


March 6, 2008

Hi Ted,

Ok, I read the FAQ, if I understood right, gold is yellow, to make it white gold they add other metals to make it white....am I correct on this? Now the rhodium plating is a metal just to make the surface of the band brighter/blink blink! LOL

If correct, the ring is just high maintenance. Regardless it's still gold and it isn't worth any less than the yellow gold ring.

Nathalie Torres
- Winnipeg, Canada


March 6, 2008

Yes, that is my understanding, Nathalie.

I've been married 39 years and just bought the 3rd setting for my wife's ring because two wore out over the decades. I doubt we'll be around long enough to wear this one out, and whoever we pass it on to won't have to worry about replating because we went yellow this time :-)


Ted Mooney, P.E. 
finishing.com
Brick, New Jersey


March 19, 2008

Hi,
Just had a quick question. I had recently found out about rhodium plating and just had it done yesterday for the 2nd time in 3 mos. My wedding set is yellow gold and I love the look of the white gold after the plating is complete. The jeweler yesterday said that if I continue to have my rings plated, they will become brittle and ruined over time and have to be rebuilt. Is this a fact? It's free for me to have it plated from the jeweler I bought it from. I realize now from the prior posts that the jeweler is probably putting a very thin layer of rhodium on and what doesn't help matters is the increasing cost of gold and other metals. I don't mind getting it done but if it's going to ruin my ring, I'll stop. Is there any fact to this?

Elaine H
- Sann Ramon, Ca, USA


April , 2008

Hi, Elaine. The biggest problem, as mentioned in the FAQS, is that the contrast between yellow gold and rhodium is so drastic that your ring becomes unsatisfactory looking very quickly. While I haven't heard of rings becoming brittle because of too frequent replating, I suppose it's possible if you are doing it every couple of months.

The price of rhodium is presently off the charts (literally! see www.kitco.com/scripts/hist_charts/yearly_graphs.cgi). It was $7000 per ounce in January and is $9,000 per ounce now. Although little is needed, I don't think you will be able to afford replating every 2 months forever, not to mention the inconvenience. Please consider letting your yellow gold ring be yellow.

Regards,


Ted Mooney, P.E. 
finishing.com
Brick, New Jersey


April 3, 2008

WAS WONDERING, COULD I GET YELLOW GOLD AND DIAMOND EARRINGS RHODIUM PLATED? I LOVE THE EARRINGS, BUT HAVE STARTED WEARING WHITE METALS EXCLUSIVELY.

JUDY MCCOLGAN
- OKLAHOMA CITY, OKLAHOMA USA


April 4, 2008

Hi, Judy. It's only a matter of how long the rhodium plating will last before wearing off considering the strong contrast. It's not a good idea for a ring, but for earrings that you wear only occasionally, and that don't get friction like a ring, it will probably be fine.

Regards,


Ted Mooney, P.E. 
finishing.com
Brick, New Jersey


August 25, 2008

Unfortunetly I could not read all the comments on this topic, I just got too tired to read of the same problem over and over again. But please read the following.
I am a Jeweller and I personally re-plate jewellery for a living.
The truth is that plating Rhodium over white gold is a jewellery making standard. Depending on the kind of alloys, the color may vary on white gold. What consumers need to know is that Rhodium is realy a PLATING and it DOES wear out. Depending on how often jewellery are used and on the person, as well as on the quality of the plating and solution used. Some jewellery are hollow and the jeweller doesn't want to risk to contaminate a $450 solution, so he uses older solution.
Consumers also need to understand that a piece of jewellery CANNOT stay shiny forever. It's normal when the surface gets scratches over time.
There is no way to keep jewellery shiny forever. They need to be cleaned and polished regularly.
Now, if you really don't want you jewellery to discolor ask you jeweller to make your jewellery using SUPER WHITE K19 WHITE GOLD. This alloy does not require Rhodium plating and will stay white forever. Furthuremore, it will REQUIRE polishing and cleaning regularly.

Pierre P. Jewellery re-plater
- Montreal


August 29, 2008

We are a manufacturing jeweller located in South Africa.

We often manufacture wedding bands for couples. Typically, mostly because the engagement ring is 18ct white gold, the lady's ring is made in the same metal.

Gents are generally rougher with their hands and so we mostly manufacture their rings in 9ct white gold which is more durable. The lower gold content (37.5%) + the other white alloys combine to give a whiter finish without the need for rhodium plating.

This is the main reason why gents bands do not tend to go yellow.

Ant O'B
Jewellery manufacturer - Johannesburg, Gauteng, South Africa


September 28, 2008

I've just read this thread with fascination. I have an 18ct white gold wedding ring and engagement ring. I've been married 4 years. 10 months ago I took the wedding ring in to the jeweller to be re-plated. This was the second time I had had it replated in the 3 years I had been wearing it (not the once every 5 they had originally advocated). Since I got it back last November, I literally only ever wear it to go to the office, I've been so careful with it, never wear it in bed, in the shower, to do DIY or gardening but not because of the 'turning yellow' problem cited here, but because despite the fact I hardly wear it, it is getting dinged and dented like you have never seen. Some of the sratches are so big you can fit a small fingernail down them. My engagement ring which I wear at the same time does not have this type of problem at all. I took it back to the jeweller at the weekend and he agreed that it looked more like a wedding ring that had been worn for 20 years, not 4 and was astonished when I related how careful I am with it. He started in about how I might have some sort of skin allergy to white gold but I find it hard to understand how a skin allergy, if it is such a thing, might be gouging scratches and dents in my wedding ring. It has now been sent back to the manufacturers for some kind of 'deep' re-rhodium plating which is going to take up to 4 weeks with a long explaination of what the problem is, but I'm not connvinced that this is going to solve the problem. A wedding ring should surely last for life but it this carries on we'll be buying a new one within a few years. Does anyone have any experience of this type of problem?

Kirsty Storr
- Norwich, England


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