Natural Australian Gem Black Opal is arguably the #1 Rarest Commercially Available Gemstone on Earth! Loose Opals hand-cut from the rough Opal are genuinely valuable and have a uniqueness that places them above every other gemstone. Precious, Valuable Investments that you can set in your own Jewellery design or give as the perfect gift as: "a Rainbow you can hold in your hand" Genuine + Natural + Guaranteed!
Genuine Natural Australian Black Opal is Australia’s National Gemstone and the State Emblem of N.S.W., the “lucky gem from the lucky country”. A hydrated amorphous form of silica SiO2·nH2O consisting of spheres of silicon dioxide molecules arranged in regular, closely packed planes. And only found in Lightning Ridge, Australia. Guaranteed free of dyes and artificial colour.