Reverse Crystal Jewelry: (also called Essex crystal) A clear crystal is cut as a cabochon. A carving is made on the flat side, like an intaglio, and painted with a thin layer of mother of pearl to produce a three-dimensional effect.
Essex crystal: See Reverse Crystal jewelry.
Essonite: (Also called "Cinnamon stone") A brown or yellowish-brown variety of garnet.
 See also: Polish, Surface, Silicate, Silver, Stone
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