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10.69ct Oval Cabochon Black Opal 17x13mm

Product code: 8071


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In stock

  1. The Finer Details
  2. Jewellery Care
  3. Delivery & Returns
  4. Holts Guarantee

Black opal are the most valuable and they have a dark black, grey, blue, green or brown background that makes the play-of-colour flashes stand out the most. Unlike ordinary opals, black opals have carbon and iron oxide trace elements present, which cause the unusual darkness of the stone. Can be fragile which makes it more suitable for jewellery such as necklaces, brooches and earrings that are less likely to be knocked. Opal is the birthstone for October. Mohs Scale of Hardness: 5.5 - 6.5 Sources: Australia, Ethiopia and Brazil. The finest quality and most durable opals generally come from Australia.

Trade discount of 20% available. Please contact us with your trade enquiry for approval.

  • Stone Size (mm):  17 x 13
  • Carat Weight (ct):  10.69
  • Price Per Carat Ex.VAT (£):  420
  • Free insured delivery <br /> on all orders over £500 Free insured delivery
    on all orders over £500
  • 100% secure <br /> payments 100% secure
  • Next day delivery on <br /> in-stock items Next day delivery on
    in-stock items
  • Online gift cards available Online gift cards available
  • Free giftwrap Free giftwrap

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