Research Article Search Results

From micro-pave to mega-watt glam, jeweler Martin Katz dazzles Hollywood stars and titans of industry alike. The award-winning designer shares his love of flying, why puka shells matter, and the blue diamond he’ll never forget.

Venture into Mogok, Myanmar, in search of ruby with GIA’s field gemologists.

Join GIA gemologists as they seek the blue treasures of Mogok.

Tour one of the world’s most active sapphire mining areas—the island of Madagascar—with GIA’s field gemologist Vincent Pardieu.

Accompany GIA field gemologists on a true gemstone mining adventure in the mountains of Pakistan, where beautiful gems are mined and cut. Travel with us on the old Silk Road used by Marco Polo, where the Himalaya, Karakoram, and Hindu Kush mountain ranges collide.

Colombia is home to a rainbow of gems, but emeralds – and the tales of lore that surround them – are the country’s most well-known treasures.

G&G Brief presents an overview of the content of the Summer 2015 issue of Gems & Gemology.

The GIA Museum showcases contemporary jewelry pieces donated by the American Jewelry Design Council.

This large marble-hosted occurrence in the Pamir Mountains is a potentially productive source of corundum, including ruby with a bright red color reminiscent of “pigeon’s blood” Burmese rubies.

Examines a form of asterism comprising two six-rayed stars, one white and one that exhibits the stone’s bodycolor. Firsthand accounts and a survey of patent documents reveal that diffusion has been used to create or enhance this optical phenomenon in synthetic and possibly natural corundum since the 1950s.

The New York lab examines three pink CVD synthetic diamonds which have received LPHT annealing treatment.