Fuchsite-Bearing Dolomite Aggregate as a New Jadeite Imitation
A snuff bottle submitted to TULAB as jadeite jade is identified as a dolomite aggregate with fuchsite.
“Worms” in Opal
Near-colorless heulandite crystals in an Ethiopian opal resemble the segmented bodies of worms.
Whimsical Growth Tubes in Tourmaline
Microscopic examination reveals intriguing growth tubes in a copper-bearing tourmaline.
Tourmaline in Tourmaline
A perfectly shaped euhedral tourmaline crystal is identified in a faceted tourmaline.
Dark Red Tantalite Crystal in Greenish Blue Sapphire
The blunt termination of a red manganotantalite inclusion displays a striking contrast against a greenish blue sapphire.
Mannardite in Quartz
Fibrous mannardite crystals are observed in three colorless quartz samples.
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.
New Edition of Tillander’s Diamond Cuts in Historic Jewellery 1381–1910
An updated edition of Herbert Tillander’s book is now available.
Susan Jacques Receives Richard T. Liddicoat Award for Distinguished Achievement
GIA’s president and CEO Susan Jacques is honored with the Richard T. Liddicoat Award for Distinguished Achievement.
Intriguing Sapphire from Montana, a New Source of Emerald in Central China, and Arkansas Turquoise
Quarterly Crystal: 𝛽-Quartz Morphology in Beryl
An aquamarine crystal from Pakistan contains a pseudomorphic quartz inclusion.
The Primary Sapphire Occurrence at French Bar Sill Along the Missouri River, Near Helena, Montana
Reports on a new source of primary gem-quality sapphire from Montana, comparing its inclusions and trace element chemistry with those from secondary sources in the state.
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