Lo 362. Burmese  ruby and diamond necklace, 1930s. Estimate 50,000 — 70,000 GPB. Photo: Sotheby's.

Of geometric design, set with cabochon rubies, circular-, single-cut and baguette diamonds, length approximately 450mm, French assay and maker's marks, several diamonds deficient. 

Accompanied by The Gem & Pearl Laboratory report no. 11948, stating that a sample of the rubies are of Burmese origin, with no indications of heat treatment.

Accompanied by Gübelin reports dated 1992, no. 9201006 and 9201007, stating that two of the rubies are of Burmese origin, with no indications of heating.

Sotheby's. Fine Jewels, London, 15 Mar 2016, 10:00 AM