Diamonds

This section features educational or commercial sites that deal with Diamonds - the pure or nearly pure, extremely hard form of carbon, naturally crystallized in the isometric system.

NOVA (PBS) - The Diamond Deception

NOVA's website accompanying their 2001 broadcast on Diamonds. Articles include those of well known authors and gemologists in the field.

Heat Treatment & Chemical Additives make stones look like Rare Gems

ACS (American Chemical Society) cover story (article by Amanda Yarnell) on how heat treatment and chemical additives can make mundane stones look they are exclusive fancy/colored/rare diamonds/gems. A MUST READ before purchasing diamonds or gemstones!

Calculator for Estimating Carat Weights of Gemstones and Diamonds

Extensive calculator for estimating weight of gems and diamonds which are already set in jewelry. You need to take pretty exact measurements and know the type of cut as well as the depth of the stone which can be difficult to measure if the stone is already set. Still quite an interesting tool.

Ruby Sapphire.com

The private website of Richard Hughes containing dozens of articles on rubies, sapphires, and the mining areas where they are found. Richard Hughes, a gemologist working at the AGTA-GTC gem lab, is considered one of the best experts in the world on rubies and sapphires.

Diamond Intelligence Briefs

News items (business-to-business) from the Diamond Industry, dealing with industry trends, blood diamonds etc.

Aurora Gems

Provider of Exclusive (naturally) colored diamonds (fancy diamonds) for collectors and jewelry. Creator of the famous diamond collection at the American Museum of Natural History (AMNH) in New York since 1989. The Aurora collection has been exhibited at the London Natural History Museum.

Sotheby's Diamonds

Sotheby's Diamonds is a unique partnership between the world's oldest auction house and the Steinmetz Diamond Group.

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