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The 3-dimensional carving displays incredible facial features
featuring intricate bead and wirework
which is an old Mine Cut
and the inside of the shank is stamped "CARTIER"
Art Nouveau 12K Boulder Opal Ring Square The 3-dimensional carving displays incredibleBoulder opals are the rarest of all natural opal varieties, comprising only 2% of Australia's total opal population. In terms of value, they are considered second only to the popular Black Opal. The name "Boulder Opal" originates from their natural formation, where they are embedded into large ironstone boulders, often retaining part of their ironstone matrix when mined. Their unique appearance includes vibrant flashes of color enhanced by the
