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2. Pink diamond - Wikipedia

   en.wikipedia.org/wiki/Pink_diamond

   Pink diamond is a type of diamond that has pink color. ... However, some Argyle pink diamonds also receive GIA certificates. [15] Clarity

3. Gemological Institute of America - Wikipedia

   en.wikipedia.org/wiki/Gemological_Institute_of...

   In 1953 the GIA developed its International Diamond Grading System and the "four Cs" (cut, clarity, color, and carat weight) as a standard to compare and evaluate the quality of diamonds. [ 2 ] As of 2024, the institute is headquartered in Carlsbad, California , and operates in 13 countries, with 11 campuses, 9 laboratories, and 4 research centers.

4. Diamond (gemstone) - Wikipedia

   en.wikipedia.org/wiki/Diamond_(gemstone)

   Gemological Institute of America (GIA) was the first laboratory in America to issue modern diamond reports, [33] and is held in high regard amongst gemologists for its consistent, conservative grading. Diamond High Council (HRD) Official certification laboratory of the Belgian diamond industry, located in Antwerp. [34]

5. Pear-shaped pink diamond sells for $31.5M at Sotheby's - AOL

   www.aol.com/article/2016/05/18/rare-pink-diamond...

   The 'Unique Pink,' weighing 15.38 carats and mounted on a ring, sold to an Asian private collector bidding by telephone, the auction house said. Pear-shaped pink diamond sells for $31.5M at ...

6. Diamond color - Wikipedia

   en.wikipedia.org/wiki/Diamond_color

   Color grading of diamonds was performed as a step of sorting rough diamonds for sale by the London Diamond Syndicate. As the diamond trade developed, early diamond grades were introduced. Without any co-operative development, these early grading systems lacked standard nomenclature and consistency. Some early grading scales were; I, II, III; A, AA, AAA; A, B, C. Numerous terms

7. Elizabeth Taylor Diamond - Wikipedia

   en.wikipedia.org/wiki/Elizabeth_Taylor_Diamond

   The Elizabeth Taylor Diamond, formerly known as the Krupp Diamond, is a 33.19-carat (6.638 g) diamond that was bought by Richard Burton for his wife, Elizabeth Taylor in 1968. The diamond was one of a number of significant pieces of jewellery owned by Taylor, her collection also included the 68 carat Taylor–Burton Diamond , which was bought ...