“Hummingbird” in Orangy Yellow Diamond
Evil Eye in a Flux-Healed Mong Hsu Ruby
Devitrified Glass “Pom-Poms” in Ruby
Dendritic Patterns in Emerald
Copper in Indonesian Chalcedony
Aquamarine with Fluorite Inclusions
Rock Crystal Quartz Skull
Irreversible Photochromism in Synthetic Sapphire
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.
Fancy Vivid Yellow HPHT-Grown Diamonds
Rose-Shaped Cloud Inclusion in Diamond
CVD Laboratory-Grown Gem Diamonds from Plasmability
Eighth Annual Gianmaria Buccellati Foundation Award Winner
“Bubble Obsidian” from Armenia
Spiral Patterns on a Non-Nacreous Pearl
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.
Large “Rainbow Calcite”
Green Jadeite-Omphacite from Guatemala
Gems Keep Giving
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