METHODS FOR EVALUATING GEMSTONE SHAPE

摘要

This disclosure relates to methods of evaluating the shape of a gemstone, such as a diamond, ruby, emerald, or sapphire. Also provided are methods of identifying gemstone shape.

主权项

1. A method for evaluating the fidelity of the shape of a test gem, comprising:
obtaining an image of a test gem, wherein the test gem image comprises a test gem shape; comparing the test gem shape with at least one reference shape; determining differences between the test gem shape and the at least one reference shape; and assigning a shape grade to the test gem as a function of the determined differences, wherein the shape grade indicates the fidelity of the test gem shape to the at least one reference shape.