cobalt spinel

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          6.37 ct Cobalt-Blue Spinel – Natural Tanzanian Cushion Brilliant

          , ,
          $28,800

          Total weight 6.37 ct
          Size 11 × 9.1 × 7.2 mm
          Shape Rectangular cushion brilliant
          Colour Neon cobalt blue
          Origin Tanzania (Mahenge)
          Treatment None – completely natural

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