Possible Natural Abalone Shell Blister
An intriguing item was sent by KC Bell to GIA’s Carlsbad laboratory for examination.
Resin Imitation Ivory with a Pseudo “Engine-Turned” Structure
Resin materials marketed as imitation ivory were recently acquired by a GIA gemologist.
Cobalt-Coated Sapphire
The New York lab recently identified a sapphire entirely covered with a cobalt coating to enhance its blue color.
Faceted Diamond Octahedron with a Remarkable Stellate Cloud Inclusion
A remarkable inclusion scene in diamond is showcased by an unconventional cutting style.
Laboratory-Grown Sapphire with Unusual Features
The Hong Kong laboratory recently examined a 14.36 ct pink-orange cushion mixed-cut specimen.
Large Laboratory-Grown Star Ruby and Sapphire
The Tokyo lab received two unusually large laboratory-grown star corundum for examination.
Grossular Garnet Crystals in Demantoid Garnet
Demantoid garnet plays host to crystals of a different garnet species.
Faceted Chiolite
A very rare faceted “snow stone” was recently encountered in the Carlsbad laboratory.
Vlasovite
A rare faceted vlasovite is encountered for the first time at the Carlsbad laboratory.