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1. Emerald-cut 6.56ct yellow diamond set in platinum and yellow gold, price on application, by Bulgari High Jewellery Collection; 020 7872 9969.
2. White-gold match band, set with 0.45ct white diamonds, £1,500; pink-gold match band, set with 0.45ct pink diamonds, £3,850; white-gold match band, set with 0.45ct yellow diamonds, £1,900, all by De Beers; 020 7758 9700.
3. Platinum-and-diamond Tiffany Legacy ring, £53,500, by Tiffany; 020 7499 4577.
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4. 18ct white-gold and diamond ring, £2,800, by Dior Fine Jewellery; 020 7172 0172.
5. Conch-pearl ring with pavé diamonds (0.81ct), set in titanium, £32,000, by Mikimoto; 020 7629 5300.
6. Solitaire diamond and platinum ring, from £950, from the Forever Two Collection, by De Beers, as before.
7. Sapphire and diamonds on a white-gold band, price on application, by Chanel; 020 7499 0005.
8. White-gold, kunzite (13.31ct) and diamond (1.45ct) ring, £7,500, by Theo Fennell; 020 7591 5000.