HPHT and CVD Diamond Growth Processes: Making Lab-Grown …
2016年7月25日 · Gem-quality synthetic or laboratory-grown diamonds are more available in today’s jewelry marketplace than ever before, causing both interest and concern about lab …
Birthstones | Birthstone by Month - GIA
Birthstones are a fun, popular and colorful introduction to the world of gemstones. They appeal to audiences around the world regardless of gender, age, nationality or religion. Birthstones carry …
Natural Diamonds | Diamond Stone – GIA C
Get to know all you need about diamond – the history, facts, quality factors, treatments, imitations and much more here at GIA.
GIA Education Story
GIA Education. Elevate your career in gems and jewelry by combining passion with knowledge. Study at the Gemological Institute of America, the world’s foremost authority in gemology, and …
Gemology Classes | Online Division - GIA
It is possible to advance your career and keep up with your life and it all starts with the GIA Online Division. You’ll learn using the same curriculum taught on GIA campuses, but you’ll study …
GIA - Report Check
2000年1月1日 · For reports dated on or after: January 1, 2000: July 1, 2010: January 1, 2014: February 1, 2015: December 19, 2019: December 19, 2022: Report data: PDF facsimile of ...
Programs & Courses - GIA
Programs. From gemology to jewelry manufacturing arts to bench jewelry, the courses we offer give students practical, in-depth, on-the-job skills and knowledge.
GIA - Report Check
ANALYSIS & GRADING Report Check. GIA reports represent the highest standard of reliability, consistency and integrity. And now, GIA Report Check is available for all GIA reports, …
Gemological Institute Of America | All About Gemstones - GIA
Observations of Oval-, Pear-, and Marquise-Shaped Diamonds: Implications for Fancy Cut Grading. Presents findings from observations of oval-, pear-, and marquise-shaped diamonds, …
Spinel Gemstone | Spinel Stone - GIA
Spinel, like garnet & diamond, is singly refractive, with the same physical properties in all crystal directions. It belongs to the cubic crystal system.