This pendant features a raw, uncut Ethiopian opal. The stone weighs in at 15 carats & is set in solid 14k yellow gold. Ethiopian opal has quickly risen to prominence since the discovery of material in the Welo province in late 2007. This mine proved to be truly extraordinary, producing a wide variety of high-quality opals, ranging from black to white & with every possible color & pattern of fire. This is a great opal. It has a transparent base & incredibly brilliant rainbow fire. J65 1221 Natural Opal Necklace | 15 Ct Raw Ethiopian Birthstone Gift, Rainbow Gemstone For Wife Jewelry 14K Gold Golden Fire Rough Pendant