Sapphire and diamond bracelet, Alexandre Reza. Estimate 245,000 — 440,000 CHF. Photo Sotheby's

Set with eleven oval and cushion-shaped sapphires, highlighted with clusters of marquise-shaped and brilliant-cut diamonds, length approximately 190mm, signed A. Reza, French assay and maker's marks, box stamped Alexandre Reza.

Accompanied by SSEF report no. 68723, stating that ten sapphires are of Burmese origin, one is of Ceylon origin, all with no indications of heating. 

Sotheby's. Magnificent Jewels and Noble Jewels, Genève, 11 nov. 2015, 10:00 AM