Below you can find the Once a french term for an imperfect gem it's now a magnifying glass jewelers use to find flaws in gems Jeopardy Words Answer. The answer to Once a french term for an imperfect gem it's now a magnifying glass jewelers use to find flaws in gems has 5 letters. This clue belongs to the From the french category and is part of Jeopardy Word Level 918. If you scroll near the bottom you will find other clues and answers part of level 918