Mexican Opal Necklace, orange, green and gold flash in this brown Mexican opal gemstone set in an open oval of sterling silver. A one of a kind necklace. The 20" double diamond chain has a hand made toggle clasp for ease in wear--no tiny spring clasp to struggle with here. The shimmering colors make this special gem well worth a second and third look. Pendant size overall is 1.8" high by 1.12" wide, hanging from a 1 inch bar. Total weight is 0.6 ounces!