Lot 146. A 10.779 carats Colombian emerald and diamond ring. Estimate £ 100,000 - 150,000 (€ 120,000 - 170,000). © Bonhams 2001-2019

The step-cut emerald, weighing 10.779 carats, between demi-lune-shaped diamond shoulders, weighing 0.97 carat and 1.03 carat, ring size N

Accompanied by a report from SSEF stating that the emerald is of Colombian origin, with minor oil in fissures. Report number 99410, dated 18 April 2018.

Accompanied by a report from GIA stating that the diamond weighing 0.97 carat is E colour, SI1 clarity. Report number 1192045169, dated 25 January 2018.

Accompanied by a report from GIA stating that the diamond weighing 1.03 carat is G colour, SI1 clarity. Report number 2191045397, dated 25 January 2018.