loupe

American  

[loop] / lup /

noun

1. any of several varieties of magnifying glasses, used by jewelers and watchmakers, of from 2 to 20 power and intended to fit in the eye socket, to be attached to spectacles, or to be held in the hand.

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loupe British  

/ luːp /

noun

1. a magnifying glass used by jewellers, horologists, etc

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Etymology

Origin of loupe

1905–10; < French, originally an imperfect gem, a mass of hot metal ≪ Germanic; see loop ³, lob ¹

Example Sentences

Buckley typically sports a T-shirt and a red lanyard holding his keys and a jeweler’s loupe; he collects impossibly rare Rolexes, but usually wears an Apple Watch.

From New York Times • Feb. 1, 2023

“I don’t see anything that would be considered as a technological add-on to it,” Barrios said after a few moments of examining the rock with a silver loupe magnifier.

From Los Angeles Times • Oct. 7, 2022

On the “Tonight Show,” he proudly explained to Jimmy Fallon that the jewellers had given him a professional-grade loupe.

From The New Yorker • Dec. 9, 2019

Photo by Ryan David Brown for The Verge Steve Curry stood in front of a hay bale with a jeweler’s loupe hanging from his neck and a combat veteran cap on his head.

From The Verge • Jun. 25, 2018

A third will weigh each, announce its mass, and pass it to von Rumpel, who will examine the stone through a loupe and call out the clarity—Included, Slightly Included, Almost Loupe- Clean.

From "All the Light We Cannot See" by Anthony Doerr