Research Article Search Results
Nominal Type IaB Diamond with Detectable Uncompensated Boron
Examination of a type IaB diamond that exhibited instantaneous 2803 cm–1 FTIR absorption shortly after exposure to an ultra-short-wave UV source.
Chart: Inclusions in Natural, Synthetic, and Treated Diamond
Provides a visual guide to the internal features of natural, synthetic, and treated diamonds.
Freshwater Pearls, Blister and Loose, with Their Host Shells
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.
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.
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.
Single HPHT Synthetic Diamond Mixed in Natural Diamond Ring
A Rare Ruby from Montana
Zircon Cluster in Ethiopian Sapphire
The presence of these zircon clusters might help separate Ethiopian sapphire from other basalt-related sources.
Synthetic Moissanite Coated with Diamond Film Imitating Rough Diamond
A rough sample submitted as diamond is proven to be a synthetic moissanite with a thin diamond coating.
Coated Pink Synthetic Moissanite
A pink synthetic moissanite is coated with a thin colored film, raising questions about the natural origin of its color.
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.
