A cabochon (; ) is a gemstone that has been shaped and polished, as opposed to faceted. The resulting form is usually a convex (rounded) obverse with a flat reverse. Cabochon was the default method of preparing gemstones before gemstone cutting developed.

Application

Cutting en cabochon (French: "in the manner of a cabochon") is usually applied to opaque gems, while faceting is usually used

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