F350Platinum Posted August 13, 2021 Author Share Posted August 13, 2021 21 minutes ago, kac said: Stone could be amethyst. Clean it up and look for inclusions. Cool pin. Looked at it closely with a loupe, and tested it with a diamond tester. The stone had lots of deep scratches, and it's not a crystal. Most likely paste or glass. It is very cool though, the setting is very old but not cast, it's stamped and plated, very fragile. I'm thinking mid 1800s to 1900s. Glad you got me to think of doing that! ? 1 Link to comment Share on other sites More sharing options...
kac Posted August 13, 2021 Share Posted August 13, 2021 Inclusions are the easiest way to check to see if a stone is natural or man made. That includes diamonds. Think your right on the date, found something similar while back but the one I found had a natural stone. 1 Link to comment Share on other sites More sharing options...
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