Large “Rainbow Calcite”
Green Jadeite-Omphacite from Guatemala
Gems Keep Giving
Gem-Quality Spinel from Southern Malawi
Natural Non-Nacreous Pearls from Various Marine Mollusks
The Bangkok laboratory studies 35 loose non-nacreous pearls from a wide range of marine mollusk species.
Spiral Patterns on a Non-Nacreous Pearl
“Enhydro” Amethyst from Morocco
Eighth Annual Gianmaria Buccellati Foundation Award Winner
“Bubble Obsidian” from Armenia
Heated Corundum, the Remarkable Winston Red, and an Extraordinary Renaissance Jewel
Quarterly Crystal: Fluorite in Quartz from China
Lepidolite in Copper-Bearing Tourmaline
Fancy Vivid Yellow HPHT-Grown Diamonds
Rose-Shaped Cloud Inclusion in Diamond
CVD Laboratory-Grown Gem Diamonds from Plasmability
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.
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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