Methods, apparatus, and systems for evaluating gemstones

Details Methods, apparatus, and systems for evaluating gemstones Methods, apparatus, and systems for evaluating gemstones

2004-12-20

2008-09-02

Lauchman, Layla G. (Department: 2877)

Optics: measuring and testing

Crystal or gem examination

Reexamination Certificate

active

07420657

ABSTRACT:
Methods for grading gemstones, apparatus for grading gemstones, and systems that utilize such methods and apparatus are disclosed.

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