Christie’s to auction rare pink diamond and Cartier ruby brooch

**Staff Writer **

Christie’s will auction a Cartier 8.41-carat fancy vivid purple-pink diamond and a 10.10-carat Burmese ruby and diamond brooch, for US$12 million and US$7.7 million respectively, during its Hong Kong Magnificent Jewels Autumn Auction on 24 November 2026.

The auction will form part of Hong Kong Luxury Week and will feature a selection of coloured gemstones, jadeite jewellery, natural pearls and jewellery from major international jewellery houses.

The 8.41-carat purple-pink diamond is a type IIa diamond, a category known for its high chemical purity. Christie’s said the stone has strong colour, brightness and brilliance.

The diamond is set in a ring and surrounded by round and lozenge-shaped diamonds. Christie’s said large rough pink diamonds are extremely rare and difficult to cut, adding to the significance of the 8.41-carat stone.

The auction house said the diamond is expected to attract interest from collectors because of its colour, size and rarity.

The second major highlight is a Cartier brooch featuring a 10.10-carat Burmese ruby. The ruby has the sought-after “pigeon blood red” colour and shows no indications of heating.

Christie’s said untreated Burmese rubies of this size and quality are rare. The ruby is surrounded by triangular and square-cut diamonds and is mounted in a Cartier design dating from the early 20th century.

The brooch reflects Cartier’s early use of platinum and features geometric shapes and symmetrical design associated with the Art Deco period. Christie’s said the brooch was last offered at auction more than a decade ago.

The Hong Kong auction is part of Christie’s 40th anniversary celebrations in Asia. The company said it has organised major sales in the region over the past four decades and has expanded its presence through auctions, exhibitions and digital services.

Christie’s offers about 50 000 objects each year through live and online auctions across more than 80 categories, including art, jewellery, handbags, watches, wine, cars, design, rare books, guitars, memorabilia and manuscripts.

The company said prices for items offered through its auctions range from about US$500 to more than US$100 million.