Lot 209. A Burma ruby and diamond bib necklace, by Bulgari. Estimate CHF190,000 – CHF290,000 ($191,620 - $292,472). Price realised CHF 341,000. Photo Christie's Image Ltd 2015

Composed of a series of slightly graduated oval cabochon ruby and circular-cut diamond scrolling clusters, the front set with a twin line of similarly-set clusters, 34.5 cm, mounted in gold, in blue leather Bulgari pouch. Signed Bvlgari 

Accompanied by report no. 81300 dated 22 July 2015 from the SSEF Swiss Gemmological Institute stating that the origin of the rubies is Burma (Myanmar), with no indications of heating and indications of minor to significant amount of oil. 

Christie's. GENEVA MAGNIFICENT JEWELS, 10 November 2015, Geneva