Research Article Search Results
A New Life for Revival Jewelry Styles: Archaeological, Renaissance and Egyptian
Revival jewelry is inspired from the past – and connects us to the rich history of our civilization.
Chart: Inclusions in Natural, Synthetic, and Treated Diamond
Provides a visual guide to the internal features of natural, synthetic, and treated diamonds.
Diamonds from the Deep: How Do Diamonds Form in the Deep Earth?
Surprisingly, diamonds do not all form in the same way, but rather they form in various environments and through varying mechanisms.
The Gemological Characteristics of Pipi Pearls Reportedly from Pinctada maculata
Reveals the internal features and spectroscopic data of these small natural pearls and offers the means of separating them from pearls of related mollusk species.
Corundum with Spinel Corona from the Tan Huong–Truc Lau Area in Northern Vietnam
Explains the reactions responsible for the formation of a well-developed reaction rim of spinel that surrounds the corundum core in some specimens from this deposit.
Large Pargasite Inclusion in Kashmir Sapphire
Unusually large prismatic pargasite inclusions observed in a Kashmir sapphire submitted to the Carlsbad lab for origin determination.
Gemological Analysis of Lightbox CVD-Grown “White” Diamonds
Lightbox, a De Beers company, has begun selling “white,” pink, and blue CVD laboratory-grown diamonds at a flat rate of $800 per carat.
A Rare Ruby from Montana
An exceptional ruby specimen is identified with a Montana origin in the Carlsbad lab.
Freshwater Pearls, Blister and Loose, with Their Host Shells
Three freshwater pearls, two blister and one loose, were examined in the New York lab.
Gilson Cat’s-Eye Synthetic Emerald
In the early 1960s, French ceramist and engineer Pierre Gilson succeeded in growing and producing flux synthetic emerald of commercially marketable quality.
Zircon Cluster in Ethiopian Sapphire
The presence of these zircon clusters might help separate Ethiopian sapphire from other basalt-related sources.
Natural-Color Pink, Purple, Red, and Brown Diamonds: Band of Many Colors
Summarizes data collected by GIA on more than 90,000 natural diamonds in this color range and presents their gemological and spectroscopic properties.
