Established in 1931, GIA is an independent nonprofit that protects the gem and jewelry buying public through research, education and laboratory services.

My Laboratory & GIA Laboratory Client Portal. Now featuring one log in for My Laboratory and the GIA Client Portal. Maintain your laboratory account information and grading results online.

The Gemological Institute of America (GIA) is a nonprofit institute based in Carlsbad, California. It is dedicated to research and education in the field of gemology and the jewelry arts. [1] Founded in 1931, GIA's mission is to protect buyers and sellers of gemstones by setting and maintaining the standards used to evaluate gemstone quality.

2025年1月27日 · Established in 1931, the Gemological Institute of America (GIA) is the world’s foremost authority on diamonds, colored stones, and pearls. A public benefit, nonprofit institute, GIA is the leading source of knowledge, standards, and education in gems and jewelry.

Established in 1931, GIA is the world’s largest and most respected nonprofit institute of gemological research and learning. GIA discovers (through GIA Research), imparts (through GIA Education), and applies (through the GIA laboratory and GIA Instruments) gemological knowledge to …

At the Gemological Institute of America, we’ve spent nearly 100 years ensuring that diamonds, colored stones and pearls are assessed, catalogued and graded on their quality, with unbiased scientific precision.

Located in Carlsbad, the GIA museum houses a diverse gem and mineral collection. It is home to some of the world’s largest mineral specimens such as agate and quartz displays weighing over 100 lbs. It also houses more obscure gemstones such as chrysoberyl, fluorite, sphalerite, spinel, Mexican fire opal, Paraíba tourmaline, and many more.