CIBJO releases Gemmological Special Report: considers process of separating measurable facts from opinion; See Gemological Articles below.
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 Post subject: Analyzing Precious Metals For Content & Purity
PostPosted: Sat Aug 18, 2018 8:10 pm 
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Exceptionally thorough article. Highly recommended!

https://www.chemical-supermarket.com/fi ... inting.pdf



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 Post subject: Re: Analyzing Precious Metals For Content & Purity
PostPosted: Sun Nov 11, 2018 8:24 pm 
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Thanks for posting this! I have, what I believe to be, a palladium bracelet and necklace that had marked caratage that didn't make sense. It tested as 4 carat gold, and it's specific gravity was in the right range for palladium + gold. I finally heated part of it with a torch out of frustration and it turned an absolutely lovely purple/blue/green colors. I found mention of the oxidation somewhere; I believe in Renee Newman's book. It also tested positive using acid for platinum. Now, I just need to acquire some DMG to confirm what I think I know.


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