Systems and methods for evaluating apperaance of gemstone

Systems and methods for evaluating apperaance of gemstone

  • CN 1,478,200 A
  • Filed: 10/11/2001
  • Published: 02/25/2004
  • Est. Priority Date: 10/12/2000
  • Status: Active Application
First Claim
Patent Images

1. one kind is used for jewel is provided the method for cut grading, and it may further comprise the steps:

  • Shine a jewel model with a light source model from unlimited distance;

    Adopt a tolerance to assess the brightness of jewel.

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