Research Article Search Results
Possible Natural Abalone Shell Blister
An intriguing item was sent by KC Bell to GIA’s Carlsbad laboratory for examination.
Euhedral Phantom Sapphire in Sapphire
A phantom sapphire crystal within a host sapphire crystal was recently examined at GIA’s Carlsbad laboratory.
Pyrope-Almandine Garnet in Sapphire Host
The Bangkok laboratory recently identified a pyrope-almandine garnet in a sapphire host.
Dive Into Summer: Mozambique Ruby, Madagascar Sapphire, and Black Nephrite from China, Plus an Opal Inclusions Chart
A Special Type of Trapiche Quartz
Three incomplete trapiche quartz make up this interesting sample.
Gemological and Chemical Characteristics of Natural Freshwater Pearls from the Mississippi River System
Tagua Nut as a Sustainable Botanical Alternative for Ivory
Jewelry designer Alexandra Mor uses sustainable alternatives for elephant ivory.
Gem Art of the Taj Mahal, Fancy White and Black Diamonds, and Unique Inclusions in Thai Corundum
Evidence of Rotation in Flame-Structure Pearls from Bivalves of the Tridacnidae Family
A study of these pearls to characterize their distinctive flame structure and examine the possibility of rotation during their formation or growth.
Black Nephrite Jade from Guangxi, Southern China
Characterizes black nephrite from a deposit in the Guangxi region that appears to be part of a large-scale jade formation belt in southern China.
Purple Fluorite Inclusion in Emerald from Russia
Fluorite inclusions in emeralds from various localities have been reported extensively in the literature.
A “Hollow” Pearl Filled with Foreign Materials
Conclusively identifying the origin of a “hollow” pearl filled with foreign materials proves challenging.
