the.com/loupe

A magnifying glass that makes jewelers trustworthy and diamonds nervous.

means A small magnifying lens, often held in the eye socket or hand, used for close inspection of tiny details like gems, coins, or film negatives.

from From French 'loupe,' meaning a magnifying glass, which earlier meant a cyst, knot, or wen on the body — likely from the lens's domed, swelling shape. The French word itself traces back to a Germanic root related to 'lupus' (wolf) in some accounts, though that connection is uncertain and possibly folk etymology; the swelling-shape story is the safer bet.

typical power
10x magnification is the jeweler's standard
the flaw check
reveals inclusions sellers hope you never see
no batteries
just glass, light, and a squinting eye
name origin
french for magnifying glass, literally wolf's eye
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