An emerald and diamond ring, by David Webb. photo Image 2009 Christie's Ltd

Set with a large cabochon emerald to baguette diamond set claws and a brilliant-cut diamond set mount. Signed Webb - Est. €3,000 - €5,000 ($4,434 - $7,390) - Sold €8,125 ($12,004)

A gold necklace and pendant, by David Webb. photo Image 2009 Christie's Ltd

The pendant designed as an agitated Sagittarius threatening to shoot, partly pavé-set with brilliant-cut diamonds, to a chain necklace composed of wiretwist loops, 60.0 cm long. Signed Webb (2) - Est. €1,000 - €2,000 ($1,478 - $2,956) - Sold €6,250 ($9,233)

A jade necklace, by David Webb. photo Image 2009 Christie's Ltd

Composed of four rows of light mint green coloured jade beads, to a fantasy shaped carved jade pendant with textured gold mountings, on a gold bar clasp, 54.5 cm long. Signed David Webb  - Est. €2,400 - €3,400 ($3,547 - $5,025) - Sold €5,000 ($7,387)

A pair of diamond earclips, by David Webb. photo Image 2009 Christie's Ltd

Each of paisley design, set with brilliant-cut diamonds. Signed David Webb (2) - Est. €2,000 - €4,000 ($2,956 - $5,912) - Sold €4,000 ($5,909)

Christie's. Jewels and Watches. 3 November 2009. Amsterdam www.christies.com