Australian Opal Doublet Flashing Color Various Shapes Tiny ~8mm (1) Australian Opal Doublet tiny unset gemstone About 8mm long, 4mm wide, and 2mm thick; over 1 carat Natural Genuine Opal , backed with manmade doublet material Teardrop freeform cabochon multi color, small size see image with ruler Suitable for fine jewelry, item shipped will vary slightly; sold by the piece; 1 specified buys 1 opal, 2 buys 2 opals, etc.