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Assembled Bead Cultured Half-Pearl
Enormous Cat’s-Eye Aquamarine
Iridescent Pen Shell
Heat Treating Corundum: The Bangkok Operation
Spectral Reflectance and Fluorescence Characteristics of Natural-Color and Heat-Treated “Golden” South Sea Cultured Pearls
A comparison study was made between the yellow and white nacre of the gold-lipped Pinctada maxima oyster shell and 65 yellow cultured pearls.
Eighth Annual Gianmaria Buccellati Foundation Award Winner
HPHT-Processed Diamond Fraudulently Represented as Untreated
An HPHT-treated round brilliant diamond with an inscription that presents as a GIA report number is found to be inconsistent with the institute's report, previously issued for an untreated diamond.
Dendritic Patterns in Emerald
Colored Stones and Pearls
Zircon Cluster in Ethiopian Sapphire
The presence of these zircon clusters might help separate Ethiopian sapphire from other basalt-related sources.