This oval brooch is beautiful in its simplicity. It is composed of a flat slice of translucent chrysoprase, or green onyx, that has been highly polished. The edge of the onyx has been very carefully beveled. The mounting is sterling silver (unmarked) with a pretty beaded edge and hand-wrought bezel. The fittings indicate the age to be ca. 1900-1920. There is a C-catch. This pin is in excellent original condition; the stone is without flaw. This pin measures 1 3/4" wide X 1 3/8" high. An earring clutch is included to use as a safety; just slip it onto the pin bar.