Research Article Search Results
Al Gilbertson Receives Robert M. Shipley Award
GIA’s Al Gilbertson receives the American Gem Society’s highest honor.
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.
New Edition of Tillander’s Diamond Cuts in Historic Jewellery 1381–1910
An updated edition of Herbert Tillander’s book is now available.
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.
2026 Sinkankas Symposium: Gems and Minerals of Burma (Myanmar)
The date and topic of the 2026 Sinkankas Symposium is announced.
Assembled Black Imitation Pearl
An undrilled black bead is identified as an assembled imitation pearl made from shell fragments.
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.
Tourmaline in Tourmaline
A perfectly shaped euhedral tourmaline crystal is identified in a faceted tourmaline.
Whimsical Growth Tubes in Tourmaline
Microscopic examination reveals intriguing growth tubes in a copper-bearing tourmaline.
“Worms” in Opal
Near-colorless heulandite crystals in an Ethiopian opal resemble the segmented bodies of worms.
Sea Urchin–Like 3D Radial Fissures in a Heated Mong Hsu Ruby
Examination of a 1.34 ct ruby reveals a unique inclusion formed during heat treatment.
“UFO” in Diamond
A diamond feather and its reflection resemble an unidentified flying object.
