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Bonhams Masterclass on Coloured Diamonds



24 MAY or 25 MAY (THU or FRI)
6:00pm – 8:00pm

Masterclass starts promptly at 6:30pm.


Bonhams Hong Kong Gallery

Suite 2001, One Pacific Place

88 Queensway, Admiralty


Please RSVP with your preferred date:
(852) 2918 4321


The geological rarity of natural fancy coloured diamonds is owed to a number of factors. Guests have an opportunity to handle, preview, and discuss a selection of highlights from the forthcoming Rare Jewels and Jadeite auction with Graeme Thompson, Director of Jewellery, and Paul Redmayne, Head of Sale, Jewellery.

Of all the coloured diamonds, red is the rarest of all. Like pink diamonds, they are created through a process known scientifically as "Plastic Deformation". Such is their rarity that GIA (Gemological Institute of America) records show that from 1957 to 1987, not one laboratory report was issued for a diamond with "red" as the only descriptive term. Today, only a handful of red diamonds are recovered every few years, with the majority weighing considerably less than 1 carat. One of this sale’s highlights is a rare fancy coloured diamond and diamond ring, the cushion-shaped fancy brownish red diamond, weighing 1.30 carats, between similarly cut diamond shoulders, ring size 5½.

Drinks reception starts at 6:00pm. Masterclass starts promptly at 6:30pm.

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