Lot 78. A 23.54 carats Sri Lankan sapphire and diamond ring, by Sterlé, circa 1960. Estimate £ 25,000 - 35,000 (€ 28,000 - 39,000). Sold for £ 25,000 (€ 28,098). © Bonhams 2001-2018

The cushion-shaped sapphire, weighing 23.54 carats, set within an undulating openwork surround decorated with graduating baguette-cut sapphires and brilliant-cut diamonds, on a ropetwist band, signed Sterlé Paris, numbered, ring size J½ (sizing band), cased by Harry Hofmann, Zürich.

Accompanied by a report from GCS stating that the sapphire is of Sri Lankan origin, with no indications of heating. Report number 78150-49, dated 11 April 2018.

Bonhams. FINE JEWELLERY, 26 Sep 2018, 14:00 BST - LONDON, NEW BOND STREET