The December 2002 edition of Auction Market Resource (AMR), Rego Park, N.Y., features a special section dedicated to certified colored and colorless diamonds sold at auction. The publication includes market trends and gemological information intended for estate and second-hand jewelry dealers and appraisers.
Composite charts show colorless to near-colorless diamonds and fancy-color diamonds listed first by color and shape and then by price per carat. For colorless to near-colorless diamonds, comparisons also are made to two popular trade price lists to illustrate the discounts that can be had when buying at auction. Trends gleaned from the data reflect a soft auction market for diamonds last year.
AMR uses the GemDialogue color descriptive system with more than 60,000 colors to match against to catalog the colors of fancy-color diamonds.