Lot 570. Property of a Spanish ducal family. Burmese ruby and diamond necklace, 1930s. Estimate 90,000 — 145,000 CHF. Lot sold 545,000 CHF. Photo Sotheby's 2013

Designed as a series of geometric links set with cushion-shaped rubies, circular-, single-cut and baguette diamonds, length approximately 345mm, separates into two bracelets, lengths approximately 175 and 170mm, each with French assay and maker's marks, one small diamond deficient. 

Accompanied by Gübelin report no. 12120108, stating that the rubies are of Burmese origin, with no indications of heating.

Sotheby's. Magnificent Jewels and Noble Jewels, Geneva, 14 May 2013