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Diamonds and Diamond Grading 12
Diamonds and Color
6
Geology
Post-Graduate
10/29/2018

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Cards

Term
Annealing
Definition
using heat to stabilize irradiated color in gemstones
Term
Color Center
Definition
structural defect that influences an object's absorption of light and can cause its color
Term
Fancy-Colored Diamonds
Definition
diamonds that exhibit yellow or brown color beyond the Z range, or that exhibit any other color
Term
Fluorescence
Definition
emission of visible light by a material when it's exposed to ultraviolet radiation
Term
Normal Color Range
Definition
range of diamond colors from colorless to light yellow and light brown, also called the D-to-Z range
Term
Selective Absorption
Definition
process by which a material absorbs some wavelengths of light and transmits others
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