The Rapaport Price List, informally known as the Rap List or Rap Sheet, is the diamond industry standard for the pricing of diamonds.
Jewelers and diamond merchants use it to set prices for consumers.
The report is issued in the form of a table and prices diamonds based on their size, color and clarity.
[3] Each price list has four separate grids each one containing information for a different carat size for diamonds.
The price listed based on this information is in hundreds of dollars per carat.