“Out of the Darkness” …and Into the Light of Diamond Fluorescence
A unique art piece crafted with more than 9,200 diamonds is examined at GIA’s Carlsbad laboratory.
Master Diamond Cutter Harvey Lieberman
A look at Harvey Liberman’s career as a renowned diamond cutter in New York’s Diamond District.
New Production of Sapphire from Matepwende, Tanzania
Reports on the study of sapphire samples from a newly discovered source in southern Tanzania.
Mineral Assemblage of “Paraíba Matrix”
The contents of two “Paraíba matrix” samples are analyzed.
Helvine Inclusions in Morganite
An orangy pink morganite specimen from Madagascar contains hundreds of yellow helvine crystals aligned on a single plane.
Almandine Garnet from Phu Tho, Vietnam
Reports on the study of garnet samples from a source in northern Vietnam.
Zoned Trapiche Emerald with Goshenite Overgrowth
A 12.62 ct trapiche emerald with areas of goshenite is analyzed in GIA’s Tokyo laboratory.
Arzakite Inclusion in Ruby from Mogok
A report on the first documented arzakite inclusion in a Mogok ruby.
Gemfields Emerald and Ruby Auctions
An inside look at the mid-2024 offerings from the Gemfields emerald and ruby auctions.
“Cotton Pearl” Imitations
An in-depth look at a new pearl simulant gaining popularity in the fashion jewelry market.
International Jewellery Kobe 2024
An overview of one of the premier international jewelry trade shows in western Japan.
Pearls Marketed as “Venezuelan Pearls”
GIA’s Mumbai laboratory reports on a study of 988 reportedly “Venezuelan pearls.”
An Unusual Saltwater Bead Cultured Pearl
A look at an unusual saltwater bead cultured pearl consisting of two parts.
GIA Student Design Showcase
A GIA student from the London campus receives recognition for a necklace design featuring baroque pearls, diamonds, and light pink garnets.
A Minute Foraminifera Shell in a Natural Non-Nacreous Black Pearl
Reports on the study of a foraminifera shell discovered in a pearl reportedly from a Pinctada radiata mollusk.