Jeweler's Loupe
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Definition:
A loupe is a special magnifying glass that enables you to take a closer look at a gemstone or other object. The loupe makes internal flaws and surface blemishes more apparent and allows you to assess color, cut, and other aspects of the stone. The Federal Trade Commission dicates that a 10X (magnification of 10 times the original size) loupe be used for all standard gemstone grading performed in the US.
Pronunciation:
loop
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