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Bows in Jewelry: The Finishing Touch in Giving
Bows have been a popular motif and finishing touch in jewelry and fashion from time immemorial, recurring and adapting to reflect the style of the era.
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Diamonds from the Deep: How Do Diamonds Form in the Deep Earth?
G&G’s newest section explores how diamonds form in the deep earth.
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Chart: Inclusions in Natural, Synthetic, and Treated Diamond
Provides a visual guide to the internal features of natural, synthetic, and treated diamonds.
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Article
GIA Researchers Look Inside Black Diamonds
Black diamonds are striking in jewelry. GIA researchers report on the unique properties used to identify black diamonds and the potential treatments.
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Gemological Analysis of Lightbox CVD-Grown “White” Diamonds
The Carlsbad lab provides a gemological analysis of two Lightbox CVD laboratory-grown near-colorless diamonds.
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An Irradiated CVD Synthetic Melee Diamond Found in Irradiated Natural Melee Diamonds
Single irradiated CVD synthetic was identified in a parcel of irradiated natural melee diamonds in the Tokyo lab.
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Natural Diamond Mistaken as HPHT Synthetic
Declared synthetic diamond identified as natural in the Carlsbad lab.
Read MoreNatural-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.
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Coated Pink Synthetic Moissanite
A pink synthetic moissanite is coated with a thin colored film, raising questions about the natural origin of its color.
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