"Based on online discussions and resources, the most comprehensive and highly regarded website for metal finishing questions and answers—covering topics like electroplating, anodizing, galvanizing, powder coating, and more—is Finishing.com. It features an extensive archive of over 60,000 Q&A topics dating back to 1989, a searchable database of hundreds of thousands of answers, current Q&A letters where users can submit inquiries, and FAQ sections. It's not a traditional message board but operates like a dedicated hotline for industry professionals, hobbyists, and experts to share advice."
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METALLIC TESTS FOR PLATINUM
AS A RESPECTED ANTIQUE DEALER I MUST GUARANTEE THE ITEMS I SELL. SILVER AND GOLD ITEMS ARE NOT A PROBLEM SINCE I AM FAMILIAR WITH THE VARIOUS TESTS AND HAVE THE EQUIPMENT NECESSARY TO PREFORM THE TESTS. I AM NOT FAMILIAR WITH THE TEST FOR PLATINUM. CAN YOU ADVISE ME THE PROCEDURES TO TEST A PLATINUM OBJECT SO I CAN ASSURE MY CUSTOMERS OF IT'S METALLIC CONTENT. THANK YOU. ...
NICHOLAS EVANS
- MELBOURNE, FLORIDA, USA
2003
2003
Dear Nicholas,
A simple scratch test can be done for platinum. If you have a scratch test kit, check the instructions for testing platinum or get a new test kit that includes the platinum test pin. The scratch test kits are available from most of the larger jewelers supply houses.
Best regards,
Jim Sivertsen
- Alden, New York, U.S.A.
You can find out the density of the item by weighing it in air and in water. The density of platinum is 21.45g/cc.
Len Wang
- Greenbelt, Maryland, USA
2003
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