Gia jewelers manual

International Precious Metals Institute U. Israel Diamond Manufacturers Association Israel only. Israel Jewelers Association Israel only. Japan Jewellery Association Japan only. Japan Jewellery Designers Association Japan only. Japan Pearl Exporters Association Japan only. Jewelers Board of Trade U. Jewellers Association of Australia Australia only. Jewellers Vigilance Canada Canada only. Jewelry Industry Distributors Association U.

Leading Jewelers Guild U. National Association of Jewellers U. National Council of Jewellery Valuers Australia only. Platinum Guild International U. Plumb Club U. Responsible Jewellery Council U. Shipley, a successful jeweler, entrepreneur and educator, who realized a need for gem knowledge within the industry. Many jewelers knew little about the goods they sold, and the public was disillusioned by misinformation within the jewelry trade.

Shipley rose to the occasion by creating a gem correspondence course for jewelers and establishing a guild of knowledgeable and ethically-minded jewelry professionals.

The course and guild evolved into GIA, with the institute publishing books and setting up its first lab in Today, GIA is a leader in gem education, research, grading and instrumentation and operates globally, with facilities in eleven countries and across four continents.

Students around the globe turn to GIA for the knowledge, skills, and credentials that launch successful gem and jewelry careers. Through independent, unbiased gem grading and analysis, GIA strives to protect the gem and jewelry buying public by setting global quality standards. Since the first GIA instrument was registered in the early 's, GIA has provided trust, knowledge, and innovative technology to the industry.

Let GIA gemologists do the detective work to reveal the identity of your material. Contact us. The World's Foremost Authority in Gemology.

GIA laboratories are staffed by expert scientists and gemologists working with state-of-the-art technology. Advanced instrumentation and experienced visual observations deliver consistently accurate results.

As a non-profit organization, GIA operates independently of commercial and private interests, political lobbies and advocacy groups. Learn More. Laboratory-Grown Diamonds Identification of laboratory-grown diamonds, ensuring disclosure through laser inscription and digital-only reports. Pearls Documentation of the specific attributes of pearls and pearl jewelry, including mollusk type and growth environment.

Unknown Let GIA gemologists do the detective work to reveal the identity of your material.