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