Untreated 3.5 carat oval #8 mine turquoise cabochon. An old stock selection from Karl Lee Big Sur Gem Collection (circa 1993 rough stock), 22 karat gold bezel, sterling silver .925 base and shank. Size Q (8.5 U.S. and a bit bigger than original).

4.5 mm shank width. Open backed to allow untreated viewing from the underside, high polish finish.