Cuprian or "Paraiba-type Tourmaline"
Lot 1068
Cuprian or "Paraiba-type Tourmaline"
Sold for US$ 15,000 inc. premium
Lot Details
Cuprian or "Paraiba-type Tourmaline"
Alto Ligonha, near Nampula, Mozambique
From an alluvial deposit in the remote regions of the Alto Ligonha region of Mozambique, approximately 300 miles from Nampula, comes this attractive pear-shaped stone. The deposit, which was found only seven years ago, is one of copper-bearing or cuprian tourmaline. After much debate, the world's major laboratories have now agreed to use the coveted term "Paraiba" to describe the most vivid hues of copper-containing tourmaline—particularly for those blues, which are described in the trade as being "Caribbean" or "Windex" blue—regardless of the country of origin. The designation of "Paraiba" was previously only permissible for those stones, which actually originated at the São José da Batalha Mine in the state of Paraiba, Brazil. Of suitable size to be worn as a pendant, the present large stone is appealing due to its size, its pleasant sea-blue color and fine transparency and luster.
Weighing approximately 50.30 carats and measuring 27.5 x 23.0 x 12.5mm
Auction information

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Contacts
  1. Claudia Florian, G.J.G
    Auction Administration - Natural History
    Bonhams
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