Research Outline

Diamond Cutting and Polishing


To provide an in depth overview of the diamond manufacturing process, from raw/uncut to polished stones, specifically focusing on: yields, wastage, average cost of the process, as well as pricing of the polished stones. The focus should be on brilliant round cut, cushion cut, and emerald cut diamonds of 10-20 carats and above.

Early Findings

Costs in Manufacturing Diamonds

  • "The cutting and polishing step contributes the least to the cost of manufacturing."
  • According to 2016 report published by Statista, India had the lowest cutting and polishing costs for diamonds at $30 per carat.

Pricing of Diamonds

Yields in the Diamond Cutting Process

  • Only about 40% of a rough diamond is used when cutting a round diamond because an uncut/rough diamond is naturally cubic.
  • "The least amount of weight is wasted when cutting a rough diamond into a polished emerald cut as compared to the other cuts."

Summary of Findings

  • In the first hour of research we were able to determine that information on the diamond cutting and polishing process is available, specifically on pricing especially on 0-5 carats weights, yields and wastage, and some associated costs of manufacturing.