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Há 5 dias · In October 2018, a diamond weighing a remarkable 552.7 ct was recovered from the Diavik mine in Canada. This is by far the largest known gem diamond found to date in North America. It is nearly three times larger than the 187.63 ct Diavik Foxfire which was unearthed from the same mine in August 2015, and about twice the size of a 271 ct white ...
Há 5 dias · About GIA A Tradition Of Science and Education. 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.
20 de mai. de 2024 · The Gemological Institute of America (GIA) has released the Spring 2024 edition of Gems & Gemology (G&G), marking the 90 th anniversary of the journal.. This issue presents research studies on colored stones and treatments, recaps the Tucson gem shows, spotlights an impressive garnet necklace, and contains the annual G&G Challenge quiz.
22 de mai. de 2024 · An independent nonprofit organization, GIA (Gemological Institute of America), established in 1931, is recognized as the world’s foremost authority in gemology. GIA invented the famous 4Cs of Color, Clarity, Cut and Carat Weight and, in 1953, created the International Diamond Grading System™ which is recognized around the world as the standard for diamond quality.
22 de mai. de 2024 · About GIA A Tradition Of Science and Education. 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.
23 de mai. de 2024 · About GIA Hong Kong. GIA upholds the highest standards of integrity, academics, science, and professionalism through education, research, laboratory services, and instrument development. Established in 1931, GIA is the world’s foremost authority on diamonds, colored stones and pearls. GIA Hong Kong leverages GIA's decades of groundbreaking ...
3 de mai. de 2024 · Gems & Gemology Challenge. The spring issue also offers the 2024 Gems & Gemology Challenge quiz. Score 75% or better and you’ll receive a certificate of completion; earn a perfect score and your name will be listed in the Fall 2024 issue. Entries for the Challenge must be submitted online by September 1, 2024. About the Author.
