Lot 659 , An unusual George III amethyst intaglio and diamond ring, early 19th century

An unusual George III amethyst intaglio and diamond ring, early 19th century, set with a heart-shaped step-cut amethyst measuring approximately 10.9 x 9.5mm, its table carved to depict a Roman bust traditionally identified as the Stoic philosopher Seneca the Younger, in a closed setting, possibly once surmounted by a crown or bow motif, the shoulders set with cushion-shaped diamonds, mounted in silver and gold, size O, gross weight approximately 3.5 grams
£1,000-1,500

Sold for £2,600