A pair of Golconda diamond stud earrings in enameled gold settings, India, 20th century. Photo: Christie's Images Ltd., 2010.

Each approx. 2 carats, in cobalt blue enamel setting decorated to side with stylized leafs and to back with petals - 1cm diameter (2). Estimate: £6,000 - £8,000. Price Realized £30,000

Provenance: Van Gelder Jewellery.

A Mughal diamond and enamel gold bracelet, India, late 18th-19th century. Photo: Christie's Images Ltd., 2010.

The central openwork flowerhead set with table-cut diamonds, the bracelet formed of three rows of diamonds, the reverse with gold motifs on a green enamelled ground - 2 1/2in diameter (closed) - Estimate £5,000 - £7,000. Price Realized £7,500

An enamelled silver gilt archers ring, Lucknow, 19th century. Photo: Christie's Images Ltd., 2010.

Of typical form, inlaid with pale blue, green, yellow and dark blue flowers to front and interior - 1 1/2in (4cm) diameter - Estimate £1,000 - £1,500. Price Realized £1,750

Christie's. Indian and Islamic Works of Art. 16 April 2010. London, South Kensington www.christies.com