Research Article Search Results

Accompany GIA field gemologists on a true gemstone mining adventure in exotic Mogok, Myanmar. This legendary source has been called “The Valley of Rubies,” but also produces a variety of other gemstones.

Enter a world not well-known in the West—the world of the maharajas and their jewelry, coveted by the modern-day moguls of business, entertainment, and royalty. See the fantastic works of art made today in the form of enameled Kundan meena jewelry and the regal look of polki diamonds.

Jaipur, India, is a leading emerald cutting and trading center for the global gem and jewelry industry. See inside the industry with a GIA field team, and learn the intricacies of a business seldom seen by the public or most members of the industry.

Two blister pearls attached to a host shell believed to have fossilized during the later Pleistocene period and discovered in southeastern Kenya are studied.

A report from the 34th IGC, held in Vilnius, Lithuania in August 2015.

A semi-baroque pearl with an unusual radial feature is submitted to the Bangkok lab for testing.

An inclusion outlined by minute graphite crystals within a diamond create an octahedral shape.

Microscopic and chemical analysis may provide clues to the original source of Montana’s alluvial sapphires and help distinguish them from sapphires with overlapping properties.

An overview of the Winter 2015 Gems & Gemology content.

Review of Collector’s Guide to Herkimer Diamonds, by Michael R. Walter.

A field expedition from GIA Bangkok explores a new ruby deposit and collects specimens for study.

Natural pearls of unusual size and unique appearance are retrieved from the west coast of Mexico and examined in GIA’s New York lab.