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Diamond Buying Made Easier > Diamond Glossary > Diamond Glossary- U

Diamond Glossary - Upper Girdle Facets, Ultraviolet Fluorescence, Unmounted




This is our diamond glossary of terms used in the diamond jewelry business....
    facts about diamonds-

glossary

Click a letter to view terms -

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Diamond Glossary - U

U: A grade in GIA's Color Grading System.... at the beginning of the "Light Yellow" category.


Uncut or Unpolished Diamonds: Diamonds that are usually referred to as "rough" or "diamond rough"... diamonds are they are found in the earth. It applies to all diamonds that have not been cut and polished yet.


Upper Girdle Facets: These are 16 triangular shaped facets, that are located on the crown just above the girdle.


Ultraviolet Fluorescence: The property in diamonds that makes them glow in ultraviolet light. Also known as photoluminescence. Ultraviolet light is high frequency, short wavelength electromagnetic radiation, between visible light and X-rays.


Unmounted: A faceted diamond which is loose, not set into a piece of jewelry.








James Allen Diamond Rings James Allen is a very interesting site because they have actual photos of the loose diamonds in their inventory!

blue nile - remind her

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