D-Color Natural IIa Diamond with Walstromite Inclusion
Green-Blue Maxixe-Type Beryl
Nephrite Bracelet with Filled Cavity
Strong Fluorescence in B-Jade Impregnated with Wax
Merelaniite Inclusions in Tanzanite
Perettiite-(Y) and Tusionite Inclusions in Phenakite from Myanmar
Natural Shell Blisters and Blister Pearls: What’s the Difference?
GIA researchers explore the differences between whole, blister, and shell blister pearls in this study using 33 samples from Pinctada maxima mollusks recovered off Broome, Australia.
100 ct Cuprite with Malachite Inclusions
A large faceted cuprite is examined at the Carlsbad laboratory.
Fracture-Filled Diamonds Detected in Mounted Jewelry
The Mumbai laboratory reports on a jewelry submission containing fracture-filled diamonds.
A Rare Friedelite
The Carlsbad laboratory reports on a rare submission of orangy red translucent friedelite.
An Unconventional Bead Cultured Saltwater Pearl
A semi-baroque saltwater nacreous pearl presents identification challenges in the Mumbai laboratory.
“Bamboo Forest” in Colombian Emerald
Dense tube inclusions in emerald create a scene reminiscent of a tranquil bamboo forest.
Blooming Bouquet: Thin Films in Russian Emerald
Colorful thin film inclusions are captured within a Russian emerald carving.
Fingerprint Pattern on a “Hammered” Pearl’s Surface
Spiral patterns of nacre platelets observed on the surface of a non-bead cultured pearl are reminiscent of fingerprints.
Mannardite in Quartz
Fibrous mannardite crystals are observed in three colorless quartz samples.
Quarterly Crystal: β-Quartz Morphology in Beryl
An aquamarine crystal from Pakistan contains a pseudomorphic quartz inclusion.
Known Non-Nacreous Non-Bead Cultured Pearls and Similar Unknown Pearls of Likely Cultured Origin from Pinctada maxima
Amethystine Chalcedony
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