chaton
noun
cha·ton
(ˈ)sha¦tōⁿ
plural chatons
-ōⁿ(z)
1
: the head of a ring in which a stone is set or on which a device is engraved
2
: the stone set in a chaton
3
or chaton foil : a coating (as a foil or lacquer) applied to the back of a cheap gemstone to give it greater brilliancy
Word History
Etymology
French, from Old French chastun, of Germanic origin; akin to Old High German kasto container, Middle Dutch kaste barn, Old English bēocere beekeeper, Old High German kar vessel, Old Norse ker, Gothic kas