DNA Barcoding and Next-Generation Sequencing (NGS) of Freshwater Pearls
Freshwater pearls are the subject of GIA’s latest research involving the DNA barcoding and next-generation sequencing of biogenic materials.
Gems & Gemology at Ninety: Consistency and Change
An overview of the Summer 2024 Gems & Gemology content.
A “Cobalt Blue” Gahnospinel
Cobalt is identified as the primary coloring agent in an intense blue specimen of gahnospinel at GIA’s Bangkok laboratory.
Large Faceted Pallasitic Peridot
A large specimen of extraterrestrial peridot is analyzed at the Carlsbad laboratory.
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.
Japanese Jadeite Tables
Examines the sources, color, texture, and chemical composition of jadeite from Japanese deposits.
Letters: Nacken Synthetic Emeralds: Additional Information
New developments relating to the Winter 2016 article on synthetic emeralds grown by Prof. Richard Nacken.
Multi-Generation Cutting Family from Idar-Oberstein
Alexander Arnoldi explains the strategy of Arnoldi International and provides an update on some new high-quality materials.
Preview of Nature Art Science with Paula Crevoshay
Renowned designer Paula Crevoshay discusses artistic influences and her latest creations.
Citrine from Zambia
Large, clean citrine reportedly from the Kitwe deposit in Zambia is a welcome addition to the gem market.
Aegirine in Poudretteite
Aegirine inclusions are observed in two samples of poudretteite from Mogok.
G&G Contributors Awarded for Best Geoscience Research
Several G&G contributors are recognized for their work on the latest volume in the Reviews in Mineralogy & Geochemistry series.
Anahí’s “New” Ametrine
The Anahí mine in southeastern Bolivia has enjoyed consistent production since 1990 and is best known for its ametrine.
.jpg "YMAL GIA Ed")
