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With 65,000 volumes, 230,000 images, 2200 videos, and 1200 periodicals, the Richard T. Liddicoat Gemological Library & Information Center and Cartier Rare Book Repository & Archive is the largest, ...

The world’s love of diamonds had its start in India, where diamonds were gathered from the country’s rivers and streams. Some historians estimate that India was trading in diamonds as early as the ...

This 5.30-carat emerald from Brazil has a slightly bluish green color. Courtesy John Parrish, courtesy African, Brazilian, Colombian Gems Incorporated. Emerald has many special qualities, but colored ...

Jadeite comes in a wide range of colors. The most valuable is an intense green called Imperial. - Courtesy Mason-Kay Fine Jade Jewelry To understand the value of jade, you have to look beyond its ...

GIA researchers report on a new nickel-diffusion treatment used to modify color in spinel and present criteria for identification.

Graduate Jeweler Program The Graduate Jeweler diploma program is a hands-on experience that introduces students to the knowledge and skills required for a career in jewelry fabrication and repair. You ...

The GIA Report Results API allows applications to integrate with GIA’s database in order to verify grading information and retrieve GIA report PDFs, images and other assets associated with a GIA ...

Characterizes an anorthoclase variety of alkali feldspar found in southeast Vietnam and evaluates its potential for commercial use.

Shopping for ruby, the July birthstone? Learn about its history, origins, care and cleaning, and where rubies can be found to help you pick the right one.

Amethysts from Boudi, Morocco, are characterized by double terminations and hourglass-shaped color zoning. This study provides infor­mation about the geology of the deposit, the mining of the material ...

Pearl, Alexandrite, Moonstone are the three birthstones for June. Learn about the history and where these three June birthstones can be found, so that you can buy the perfect June birthstone for you ...