Turquiose 12 X 16mm Cabochons Genuine Natural Loose Unset Gem Spiderweb (Qty=2) 2 Turquoise oval cabochons 12mm x 16mm oval, 3.8mm to 4.2mm thick Blue colors with spiderweb, genuine gemstone Glittering luster, very well cut and polished Loose Gemstone for fine jewelry