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Gems and Gemology

For discussing anything to do with gemstones and gemology - in conjunction with https://www.gemdat.org
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Latest Discussions

2wWhat this piece is worth?Posted by joris weltens. One reply.6wMillions of years old "Peanut Wood" from Australia – Look at these fossil patterns!Posted by Armonia Gems. 9 replies.6wIntroduction – Opal enthusiast from FrancePosted by yann -Opalesandgems. One reply.7wPrasiolitePosted by Richard Goodrick. 19 replies.8wNatural topaz 250 carats.Posted by Alexey Bezmenov. 9 replies.8wMoonstone vs white labradoritePosted by calarquist. 8 replies.9wAre there many here who collect lab grown gemstones? Posted by Makshi Smith. 12 replies.9w⚠12 imagesDoes Star Blue-Quartz Exist?Posted by Woody Walker. 58 replies.11wWhat is an Opalescent Stone?Posted by Katarina Alves. 6 replies.15wRepair broken amber?Posted by Howard Heitner. 5 replies.Sep 2025Lavender SpinelPosted by Max Laugier. 7 replies.Aug 2025330gram Aquamarine etched from Brazil Posted by Gil Shimonishi. 8 replies.Aug 202511ct Conch Pearl w/ diamonds and Rubies in 18k yellow Posted by Gil Shimonishi. One reply.Aug 202539.1ct natural Sri Lanka Sapphire Had recut to 36.3ct Posted by Gil Shimonishi. 8 replies.Aug 2025Other side of the boulder opalPosted by Gil Shimonishi. 6 replies.Aug 2025Front side Posted by Gil Shimonishi. 6 replies.Aug 2025Malkhan Tourmaline CleaningPosted by Gil Shimonishi. 6 replies.Aug 2025GIA 4.76ct Burma no Heat in Platinum and Diamonds Posted by Gil Shimonishi. 4 replies.Aug 2025Accidentally cut myself cobbing Posted by Gil Shimonishi. 3 replies.Aug 2025Madagascar demantoid specimen Posted by Gil Shimonishi. 3 replies.Aug 2025Opals SplitPosted by Gil Shimonishi.Aug 2025Boulder Opal specimen Posted by Gil Shimonishi.Aug 2025Australian Crystal Opal under Microscope Posted by Gil Shimonishi. One reply.Aug 2025Burmese Unheated Ruby Posted by Gil Shimonishi.Aug 20253.1ct Center Benitoite another 4cts of rounds. 18k Yellow Gold and Platinum Posted by Gil Shimonishi. 2 replies.

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