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Citrine is the transparent, pale yellow to brownish orange variety of quartz. View the Gem Encyclopedia. Established in 1931, GIA is an independent nonprofit that protects the gem and jewelry buying public through research, education and laboratory services.
Vor 3 Tagen · 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.
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. Founded in 1931, GIA's mission is to protect buyers and sellers of gemstones by setting and maintaining the standards used to evaluate gemstone ...
Study whenever and wherever you want, then submit assignments and take exams online. Instructors are available by email or phone to provide support, guidance and expertise. Get hands-on experience in lab classes offered at GIA campuses worldwide.
Das Gemological Institute of America (GIA) wurde 1931 von Juwelier Robert M. Shipley gegründet. Es befasst sich mit der Erkundung, Forschung und Lehre von Edelsteinen und Diamanten und deren Bewertung. Die Organisation befindet sich in Carlsbad (Kalifornien)
From the Hope diamond to the Spirit of the Rose, the Taylor Burton and the Lesotho Promise, we are trusted by museums and top auction houses all over the world to grade and research nature’s finest treasures.
GIA's commitment to protecting diamond buyers inspired the Institute to create the 4Cs and the International Diamond Grading System™. These methods are the universal benchmarks by which all ...
