A fine ruby and diamond brooch. Photo Christie's Image Ltd 2013

Designed as a flower, centering upon an oval-shaped ruby, weighing approximately 5.56 carats, extending six marquise-shaped diamond petals, weighing approximately 5.63, 5.11, 5.02, 4.98, 4.08 and 4.03 carats, to the detachable baguette-cut and marquise-shaped diamond stem, mounted in platinum and gold, 7.0 cm - Estimate CHF780,000 – CHF1,200,000

Accompanied by report no. 66168 dated 6 December 2012 from the SSEF Swiss Gemmological Institute stating that the ruby is of Burmese origin, with no indications of heating

6 GIA reports stating the following:

Weight Report number Date Colour Clarity Type
5.63 ct 2155128502 14 Dec 2012 D VVS1 pot. Type Ia
5.11 ct 5151128501 17 Dec 2012 D VVS2 pot. Type IIa
5.02 ct 2155128499 14 Dec 2012 D VVS1 pot. Type IIa
4.98 ct 2155128498 14 Dec 2012 D IF Type IIa
4.08 ct 2155128506 17 Dec 2012 D VVS1 Type IIa
4.03 ct 2155128504 14 Dec 2012 D VVS1 pot. Type IIa 

Christie's. MAGNIFICENT JEWELS. 15 May 2013. Geneva