9-karat gold, enamel and topaz ring, £710, available at Net-a-porter.com.

Rose gold tourmaline ring, £16,700, available at Piaget.com.

Emerald and diamond ring, £7,333, available at Emilypwheeler.com.

Yellow gold, diamonds and malachite ring, £11,000, available at Dior.com.

Yellow gold, pink sapphire and ruby ring, £POA, available at Mingjewellery.com.

Soleil de Chanel transformable ring, £29,500, available at Chanel.com.

Pink tourmaline ring, £POA, available at Grimajewellery.com.

Pink sapphire, tsavorite and diamond ring, £24,647, available at Betteridge.com.

Roman band, gold and Muzo emerald, £24,673, available at Loren-nicole.com.

18-karat gold lion ring with fire opal, £2,210, available at Gucci.com.

Emerald-cut ring in lavender and dark amethyst, £2,715, available at Alicecicolini.com.

1970s unsigned diamond, gold and platinum cocktail ring, £8,500, available at Omneque.com.

Emerald and sapphire ring, £POA, available at Brentneale.com.

Illustrated 14-karat gold ring, £4,000, available at Net-a-porter.com.

Rubbed ribbon ring, £11,813, available at Nakarmstrong.com.

18-karat rose gold and mixed stone ring, £17,365, available at Youronce.com.

Oval-shaped tourmaline and brilliant-cut diamond ring, £POA, available at Chaumet.com.

Moulded ring, £63, available at Lamanso.shop.

Yellow gold and diamond ring, £3,250, available at Dolcegabbana.com.

Oxidised sterling silver and gold leaf ring, £1,900, available at Omneque.com

18-karat yellow gold and enamel ring, £4,400, available at Nevernot.co.uk.

18-karat rose gold, garnet and diamond ring, £7,500, available at Youronce.com.

Diamond and 18-karat gold ring, £1,900, available at Matchesfashion.com.

Coral and diamond cocktail ring, £3,326, available at Finematter.com.