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Sapphire
The name “sapphire” can also apply to any corundum that’s not ruby red, another corundum variety.
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Sapphire Quality Factors
Sapphire is one of the big three of colored gemstones (the other two are ruby and emerald). This durable gemstone captures jewelry buyers with its practicality and aura of romance. Click here and learn about the factors that make sapphire so desirable!
Rare Kashmir Star Sapphire
A stunning large Kashmir star sapphire, set in a combination ring and pendant, is submitted to the New York laboratory.
A Synthetic Moissanite Presented as Natural Diamond Rough
The New York laboratory identifies a sample submitted for a colored diamond identification and origin report as synthetic moissanite.
Blue Sapphire Reportedly from Badakhshan, Afghanistan
Reports on the internal features and spectroscopic and trace-element analysis of sapphires reportedly from Badakhshan, Afghanistan.
Lead Glass–Filled Black Star Sapphire
The first example of a lead glass–filled black star sapphire examined at GIA’s New York laboratory.
Sapphire Rough Filled with Green Lead Glass
The first sapphire with green lead-glass filling examined at GIA’s Carlsbad laboratory.
Abstracts; Fall 1991
This article, from the Fall 1991 issue of Gems & Gemology, is a compilation of abstracts of important gemology-related articles published outside of Gems & Gemology.
Abstracts; Winter 1991
This article, from the Winter 1991 issue of Gems & Gemology, is a compilation of abstracts of important gemology-related articles published outside of Gems & Gemology.
Unusual Inclusions in Green Synthetic Sapphire
A green step-cut synthetic specimen hosts inclusions that provide insight into its growth method.
The Gemological Properties of Chatham Flux-Grown Synthetic Orange Sapphire and Synthetic Blue Sapphire
The author examines the gemological properties of Chatham flux-grown synthetic orange sapphires and blue sapphires.
The Sapphires of Penglai, Hainan Island, China
Sapphire Care and Cleaning Guide
Learn about sapphire's durability and how to care for your sapphire jewelry.
