A Pair of Natural Pearl, Diamond and Emerald Drop Earrings. Photo Christie's Image Ltd 2014

Each suspending an emerald briolette, weighing approximately 15.65 and 14.32 carats, with diamond-set cap, to the pearl and emerald bead line and circular-cut diamond collet top, 7.0 cm – Estimate: CHF400,000 – CHF500,000 ($453,477 – $566,847)

Accompanied by report no. 74100 dated 07 April 2014 from the SSEF Swiss Gemmological Institute stating the emeralds are of Colombian origin, with indications of moderate amount of oil

Provenance: Christie's New York, 'Magnificent Jewels from the Collection of Ellen Barkin', 10 October 2006, lot 42.

Christie's. GENEVA MAGNIFICENT JEWELS.14 May 2014. Geneva