Lot 2006. A six-strand natural pearl, 23.00 carat Burma ruby and diamond necklace. Estimate HK$950,000 – HK$1,400,000 ($120,000-180,000). Price realised HKD 2,440,000. © Christie's Image Ltd 2015

Composed of six strands of vari-shaped white and cream natural pearls measuring approximately 4.0 - 7.3 mm, joined to the clasp set to the centre with a cabochon ruby weighing 23.27 carats, embellished by circular rose-cut and old European-cut diamonds and pearls, suspending a white button pearl measuring approximately 10.0 x 7.4 mm atop a gold button pearl measuring approximately 13.5 x 10.9 mm, mounted in gold, 40.2 cm long

Accompanied by report no. 78075 dated 28 January 2015 from the SSEF Swiss Gemmological Institute stating that the analysed properties confirm the authenticity of these four hundred sixty-four saltwater natural pearls; approximately 23.00 carat ruby is of Burma (Myanmar) origin, with no indications of heating

Please note that five pearls have not been tested for natural origin 

CHRISTIE'S. HONG KONG MAGNIFICENT JEWELS, 2 June 2015, Hong Kong