Search Results for: Grading machines
('gia'). established in 1931, gia is recognised as the world's foremost authority in gemmology. gia invented the famous 4cs of color, clarity, cut and carat weight and, in 1953, created the international diamond grading system(tm) which is recognised around the world as the standard for diamond quality
('gia'). established in 1931, gia is recognised as the world's foremost authority in gemmology. gia invented the famous 4cs of color, clarity, cut and carat weight and, in 1953, created the international diamond grading system(tm) which is recognised around the world as the standard for diamond quality...
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