A spectacular rubellite tourmaline, diamond and coloured diamond skull ring, by A. Codagnato. Photo courtesy Philips.

Designed as a grinning skull entwined by pavé-set diamond and coloured diamond snakes, the head set to the centre with a cabochon rubellite tourmaline to diamond crystal eyes, ring size L, c. 1970, signed ‘A. Codagnato’. Estimate £10,000 - 15,000. SOLD FOR £12,500

A diamond and coloured diamond serpent bangle, by A. Codognato. Photo courtesy Philips.

Designed as a coiled serpent, its body articulated and engraved as snake scales and decorated with a line of collect-set diamonds to a pavé-set diamond head and tail, the head decorated to the centre with a pear-shape rose-cut diamond and pear-shaped diamond eyes, inner diameter approximately 7 cm, c. 1960s, signed ‘A. Codagnato’. Estimate £45,000 - 55,000. SOLD FOR £52,850

A diamond and coloured diamond serpent necklace, by A Codagnato. Photo courtesy Philips.

Designed as a serpent grasping its tail in its jaws, the long body articulated and engraved as snake scales and decorated with a line of collect-set diamonds, the head and tail pavé-set with diamonds and coloured diamonds to pear-shape diamond eyes, length approximately 57 cm, c. 1960s, signed ‘A. Codagnato’. Estimate £55,000 - 65,000. Unsold

Philips. JEWELS 7 JUNE 2011 LONDON - http://www.phillips.com/