10 years, 24 countries on 5 continents, 10 countries in Europe, and 18 states in the USA 10 years, 24 countries on 5 continents, 10 countries in Europe, and 18 states in the USA

Jewelry Education

Fancy Color Diamond

Fancy Color Diamond

Những viên đá quý có giá trị nhất hành tinh là những viên kim cương có màu sắc lạ mắt - fancy color diamonds.

Chỉ có 1 viên 'fancy color diamond' trong số 10,000 viên kim cương.

Vào tháng 4/2017, viên kim cương 'Pink Star Diamond' 59,60 carat, trở thành viên đá quý đắt nhất từng được đấu giá. Viên 'Fancy Deep grayish blue Hope Diamond' 45.52 carat là viên đá quý nổi tiếng nhất thế giới.

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GIA - Gemological Institute of America

GIA - Gemological Institute of America
GIA is the world's most prestigious training and assessment institute for diamonds, gems and pearls. GIA's “4Cs” and International Diamond Grading System are the most popular, reputable and worldwide standards for evaluating diamond quality. The world's most respected jewelry retailers, museums, auction houses and private collectors rely on GIA-trained experts to evaluate, grade, and inspect their gemstones. . They recognize the importance and absolute confidence in the complete, unbiased, scientific information in gem evaluation provided by GIA. Continue reading
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