Irradiated HPHT-Grown Diamonds with Blue-Green Color Zonation
Green Haüyne
Colored Bands in CVD-Grown Diamond
Splendors from the Deep: Historic Treasures from a Spanish Shipwreck
A Multicore Non-Bead Cultured Pearl
Iridescent Tubes in Pezzottaite
A large purplish pink pezzottaite with growth banding and tube inclusions is examined in the Carlsbad laboratory.
Ruby with Synthetic Overgrowth Lining Cavities
Mineral Assemblage of “Paraíba Matrix”
Scenes from 90 Years of Gems & Gemology
“Rose” Quartz
Rare Musgravite Crystal in Green Sapphire
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