There is an internationally renowned and commonly used diamond quotation table called "RAPAPORT DIAMOND REPORT" which is used by all jewellers within the diamond industry. This diamond price chart is an important pricing reference point for diamond manufacturers. The Rapaport Diamond report is a quotation table price chart which is the international standard for diamond prices and is common to all countries around the world. This diamond pricing table is updated on a weekly basis to reflect the change in prices of diamonds and to factor in market factors that occur which could affect the prices of diamonds as a commodity.
This Rapaport diamond quotation table clearly lists the prices corresponding to various diamond weights, clarity grades, and colour grades.

Introduction
In the early 1980s, speculation in the market caused the creation of dubious certification offices and unreliable price lists for diamonds. Prices at that time changed daily and an accurate industry-standard price list was urgently needed.
Eventually, after the period of speculation ended, many certificate laboratories and price lists disappeared. Laboratories that did survive included the GIA, HRD, IGI, EGL, and the Chambre de Commerce in Paris. As for price lists, the Price List of Martin Rapaport survived and became recognized as the most dependable source in the industry.

Back then, New York diamond broker Martin Rapaport issued a list of wholesale round diamond prices each Friday based on GIA grading scales. He spread his lists all over the world. Once each month he also issued a price list for fancy cuts.
His success was due to his efficient organisational skills and his sources of information which accurately portrayed the situation in the international diamond market. Since then, the Rapaport has developed into an international computer information network for diamonds and has grown to become the most reliable resource for diamond price listings.