Lot 92. A 14.00 carats  Colombian emerald, diamond and enamel collar, by Marina B, circa 1990. Estimate £ 15,000 - 20,000 (€ 17,000 - 22,000). Sold for £ 236,750 (€ 266,820). © Bonhams 2001-2018

The octagonal step-cut emerald, between two trapezoid-shaped diamonds, on a black enamel flexible collar, emerald approximately 14.00 carats, maker's case.

Accompanied by a report from GCS stating that the emerald is of Colombian origin, with indications of minor clarity and colour enhancement by a coloured filler. Report number 78166-76, dated 24 July 2018.

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