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Aurora Gems was founded by Harry Rodman (1909–2008) a gold refiner from the Bronx, and Alan Bronstein, a diamond dealer from New Jersey, who began collecting colored diamonds in 1979. The original 260-gem collection was on public display at the American Museum of Natural History in New York City from 1989 to 2005 in the Morgan Hall of Gems.
24.78-carat (4.956 g) A 24.78-carat Fancy Intense Pink diamond and, until the sale of the Sweet Josephine diamond in November 2015, it was the most expensive jewel ever sold at auction. Previously owned by Harry Winston and an unnamed private collector, and bought by Laurence Graff (November 2010). [31] —
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
Using these methods, Gemesis produced high-quality colorless and fancy color diamonds that were offered for sale at 20–30% lower prices than mined natural diamonds of similar quality (and, from some suppliers, lower prices than that). [6] By about 2010, Gemesis was the principal producer of gem quality lab created diamonds and jewelry.
The Fancy Color Research Foundation was founded in 2005 when the organization began to collect data for fancy color diamond wholesale market prices. Data was collected for nearly ten years before the first quarterly update of the Fancy Color Diamond Index (FCDI) in January 2015. [3]
The Pumpkin Diamond is a diamond weighing 5.54 carats (1.108 g) rated in color as Fancy Vivid Orange by the Gemological Institute of America.While this may seem small when compared to other famous diamonds, the Pumpkin Diamond is, in fact, one of the largest Fancy Vivid Oranges the GIA reports having rated and is unique compared to other orange diamonds because it is light-colored and notably ...