Fluorescence

When exposed to ultraviolet light, about half of all diamonds will display fluorescence. The amount of fluorescence determines the level to which it effects value. Fluorescence is graded from None to Extreme, with several steps in between, and it will be indicated on the stone’s certificate.

November 14, 2009  Tags: determines, fluorescence, stones  Posted in: Glossary   No Comments

Pavilion depth

Along with crown height, pavilion depth determines the overall proportion and symmetry of a gemstone cut.

November 5, 2009  Tags: crown, determines  Posted in: Glossary   No Comments

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