Research Article Search Results
Cat’s-Eye Boulder Opal
A precious cat’s-eye boulder opal from Australia is examined in the Carlsbad laboratory.
Mannardite in Quartz
Fibrous mannardite crystals are observed in three colorless quartz samples.
A Rare Friedelite
The Carlsbad laboratory reports on a rare submission of orangy red translucent friedelite.
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.
New Red Garnet Production from Northern Vietnam
GIA studies a selection of rough and cut garnet from a new source in northern Vietnam.
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.
Assembled Black Imitation Pearl
An undrilled black bead is identified as an assembled imitation pearl made from shell fragments.
Converge 2025 GIA Hands-On Sessions
GIA offered a variety of hands-on sessions for attendees during the Converge conference.
“Worms” in Opal
Near-colorless heulandite crystals in an Ethiopian opal resemble the segmented bodies of worms.
Fracture-Filled Diamonds Detected in Mounted Jewelry
The Mumbai laboratory reports on a jewelry submission containing fracture-filled diamonds.
Converge 2025 Poster Presentations
An overview of more than 30 posters presented at the Converge conference.
