Aquamarine and diamond bangle, René Boivin, 1937. Estimate 100,000 — 150,000 GBP. Photo Sotheby's

Set with cushion-shaped and circular-cut aquamarines and circular-cut diamonds, inner circumference approximately 170mm, signed René Boivin, French assay and maker's marks, case stamped René Boivin. 

Literature: Cf: Françoise Cailles, René Boivin Joaillier, Les Éditions de l'Amateur, Paris, 1994, page 191 for an illustration of this bangle.

Note: Accompanied by a certificate from Françoise Cailles.

Sotheby's. Fine Jewels, London, 1 dec. 2015, 10:00 AM