Amazon.com Product Description This Mexican fire opal gemstone captures attention with its sizzling electric orange hue. One can't help but feel energized by its intense color, which automatically draws the eye. The 6x4mm oval stone has a faceted cut and a weight of .31 carat. It would make a striking focal point for a pendant or pin. Fire opal's hardness rates between 6 and 6.5 on the Mohs scale. A somewhat sensitive gemstone, it wears best in a protective setting.
