Black Opal – Natural, Cabochon, Black, 0.58 ct

This is a smaller black opal but fairly rare in that it shows ruby red along with green and gold flashes on a black base. The colors are only moderately intense in dimmer lighting, but also are a flag harlequin type of pattern…just on a smaller stone. Color: Black with Red, Green and Gold Fire, Cut: Freeform Cabochon, Weight: 0.58, Dimensions: 3.45 x 10.04 mm. (Information supplied by photo contributor.) © Daniel Stair, CustomGemstones.com

Credit: Daniel Stair, CustomGemstones.com 2014