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Lot 517

BLACK OPAL AND DIAMOND RING

Luxury Online: Jewels

5 – 12 August 2025, 12:00 HKT

Online, Hong Kong

Sold for HK$61,440 inc. premium

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Katy Lai

Head of Sale, Specialist

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Katy.Lai@bonhams.com

BLACK OPAL AND DIAMOND RING

天然「澳洲」未經處理黑色蛋白石配鑽石戒指
Certificate: Bellerophon, black opal, natural, play-of-colour, Australia, untreated
(B48810, 1 July 2025)
Black opal: stamped 8.75cts
Diamonds: stamped 1.34cts
Metal: platinum
Ring size: 5
Gross weight: 14.0g

Footnotes

CONDITION REPORT:
In very good condition, minor signs of use. Black opal with stamped weight 8.75 carats. Dark blue to black background with green and blue play-of-colour. Some sand inclusions in the centre and minute crazing under 10x magnification. Diamonds with stamped weight 1.34 carats, approximately H-I colour, VS-SI clarity. Metal stamped Pt900.

This condition report is provided for your convenience based on the opinion of our specialists. Bonhams is not responsible for any discrepancies between this information and other opinions. The condition of lots can vary widely and the nature of the lots sold means that they are unlikely to be in perfect condition. The dimensions and weights of diamonds and gemstones are approximated using measurements and given as a courtesy, please consider them as an estimation only.

Please note additional images and videos are available upon request, kindly contact the jewellery department at jewellery.hk@bonhams.com

Additional information

This auction is now finished. If you are interested in consigning in future auctions, please contact the specialist department. If you have queries about lots purchased in this auction, please contact client services.
Buyers' Obligations
ALL BIDDERS MUST AGREE THAT THEY HAVE READ AND UNDERSTOOD BONHAMS' CONDITIONS OF SALE AND AGREE TO BE BOUND BY THEM, AND AGREE TO PAY THE BUYER'S PREMIUM AND ANY OTHER CHARGES MENTIONED IN THE NOTICE TO BIDDERS. THIS AFFECTS THE BIDDERS LEGAL RIGHTS.
If you have any questions about the Conditions of Sale, please contact your nearest client services team.
From 28 June 2025, the import into the EU of non-EU property of a certain age (and in some categories above a certain value) is subject to additional requirements. Under the relevant EU Regulation, it is the Buyer's sole responsibility to assess whether any Lot meets the criteria for import into the EU. The refusal of any required Import Licence or Importer Statement, or any delay in obtaining such Licence or Statement shall not give rise to the rescission or cancellation of any Sale, nor allow any delay in making full payment for the Lot.
Buyers' Premium and Charges
For all Sales categories excluding Wine and Whisky:
Buyer's Premium Rates
28% up to HK$400,000 of the Hammer Price
27% from HK$400,001 to HK$7,500,000 of the Hammer Price
21% from HK$7,500,001 to HK$50,000,000 of the Hammer Price
14.5% over HK$50,000,000 of the Hammer Price.
A 3rd party bidding platform fee of 4% of the Hammer Price for Buyers using the following bidding platforms will be added to the invoices of successful Buyers for auctions starting on or after 6th July 2024 – Invaluable; Live Auctioneers; The Saleroom; Lot-tissimo.
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