Research Article Search Results
Observations of Oval-, Pear-, and Marquise-Shaped Diamonds: Implications for Fancy Cut Grading
Presents findings from observations of oval-, pear-, and marquise-shaped diamonds, laying the groundwork for a fancy cut grading system.
Classification of Gem Materials Using Machine Learning
Explores the application of several machine learning models to complement traditional gem classification approaches.
Amethyst from Newfoundland, Canada: Geology, Internal Features, and Fluid Inclusion Microthermometry
Characterizes gem-quality amethyst from the La Manche deposit in the Avalon Zone of Newfoundland, Canada.
Generative Artificial Intelligence as a Tool for Jewelry Design
Evaluates the use of generative AI programs in jewelry design and addresses the related ethical, legal, and regulatory challenges.
The Extraordinary Backstory of Natural Diamonds: A Diamond Is (and Has Been) Forever
Examines new developments in the story of diamond formation and their extraction from the earth.
Gems & Gemology at Ninety: A Look to the Future
An overview of the Fall 2024 Gems & Gemology content.
Splendors from the Deep: Historic Treasures from a Spanish Shipwreck
An in-depth look at jewelry recently recovered from a 1715 Spanish shipwreck.
“Cotton Pearl” Imitations
An in-depth look at a new pearl simulant gaining popularity in the fashion jewelry market.
Two Imitation Melo Pearls
GIA’s Hong Kong and Bangkok laboratories report on imitation pearls with a striking resemblance to natural Melo pearls.
Quarterly Crystal: Spessartine in California Quartz
A smoky brown quartz crystal from Ramona, California, plays host to a 3.3 mm reddish orange spessartine.
G&G Facebook Group Surpasses 40,000 Members
Gems & Gemology’s growing community of gem enthusiasts features content from G&G contributors, GIA researchers, and other group members.
