Summary for hardest finish for jewelry Discussion
Hardest finish for jewelry is the goal of this RFQ, where Wayne Beckley asks for a coating for rings that is as hard and scratch-resistant as possible, preferably a diamond-like coating, with no nickel and with black and gunmetal colors in polished and matte versions for tungsten, titanium, and damascus stainless steel. Jimmy Huang suggests trying PVDed chromium at high temperature, while Wayne says he has samples from several DLC providers and is open to whatever makes sense. Anna Berkovich says she may be able to hard-anodize titanium rings later in January and calls it the strongest coating with a bright surface, asking Wayne to contact her directly. Goran Budija suggests a Japanese nano-technology product, though the editor notes readers should suggest technologies rather than brands or sources. The thread does not settle on one universal best coating, but it points to DLC, PVD chromium, and hard anodizing as candidate approaches depending on substrate and appearance needs.
RFQ: I am looking for someone to coat metal rings to the hardest finish possible.
I would like a diamond coating, it will work well with my marketing. It can’t have nickel in it. I’d like a black and a gunmetal color with polished and matte finishes. Rings would be tungsten, titanium, and damascus stainless steel.
Wayne Beckley
– Boise, Idaho
October 22, 2024
privately respond to this RFQ
Ed. note: As always, gentle readers: technical replies in public and commercial replies in private please (huh? why?)
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Properties and Processing of Vapor-Deposited Coatings by Lee, Johnson, Sheldon & Pickering (2014)
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A. Try PVDed Cr at high temperature?
Jimmy Huang
– Guangzhou China
November 26, 2024
RFQ: I have samples from a couple providers that are using different DLC processes. I am open to anything that makes sense.
Wayne Beckley [returning]
– Eagle
November 29, 2024
Hi Wayne,
adv.
I may be able to coat by hard anodizing your titanium rings later in January. Waiting for the equipment to arrive soon. So far it is the strongest coating with bright surface. Contact me directly please.
On the image on the left – this new coating. On the right – hard anodizing 2488 without tumbling.
Anna Berkovich
Russamer Lab – Pittsburgh, Pennsylvania
(ed. update July, 2025: sorry, Anna has retired)
December 29, 2024
A. Try japanese nano technology product; don’t know if there is any seller of it in USA
www.bestfromjapan.com/moreinfo.cfm?Product_id=16871
Hope it helps
and good luck!
Goran Budija
– Cerovski vrh Croatia
January 1, 2025
Ed. note: Readers — please suggest technologies, but not brands or sources ( huh? why?)
adv.
I was able to obtain tough surface on titanium. If anybody interested, I will send a sample with the promise that you evaluate it and provide your feedback on this forum. Please contact me directly with the address.
Anna Berkovich
Russamer Lab – Pittsburgh, Pennsylvania
(ed. update July, 2025: sorry, Anna has retired)