Vintage Art Deco Cabochon Cut Chrysoprase Ring in 10k White Gold.  This Art Deco cocktail ring features a 9.74 carat cabochon cut chrysoprase set in 10 karat white gold. Chrysoprase is a gemstone in the family of onyx and agate that is known for its apple green color. The name actually comes from the Greek words for gold and green. This unique stone is set atop a wonderful Art Deco filigree mounting and provides amazing contrast with the polished white gold.