Copper in Indonesian Chalcedony
Enormous South Sea Cultured Pearl with Filled and Partially Hollow Structure
Examination of a gigantic South Sea bead cultured pearl reveals an intriguing internal structure.
Aquamarine with Fluorite Inclusions
Rock Crystal Quartz Skull
Rose-Shaped Cloud Inclusion in Diamond
CVD Laboratory-Grown Gem Diamonds from Plasmability
Fancy Vivid Yellow HPHT-Grown Diamonds
Irreversible Photochromism in Synthetic Sapphire
CVD-Grown Diamond with an Unusual Blue Band
Checkered Pattern on Diamond
Assembled Bead Cultured Half-Pearl
Investigation in the Carlsbad laboratory reveals a pearl submission is not mabe as initially believed.
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