Lot 164. A pair of natural pearl and Burma 'Pigeon Blood' ruby earrings. Estimate CHF250,000 – CHF350,000 ($255,156 - $357,219). Price realised CHF 677,000. Photo Christie's Image Ltd 2015

Each drop-shaped natural pearl, measuring approximately 11.10-12.45x19.50 mm and 9.95-12.50x19.10 mm, with rose-cut diamond twin-row cap, to the oval-shaped ruby collet surmount, 3.0 cm, mounted platinum, gold and silver

Accompanied by report no. 82226 dated 25 September 2015 from the SSEF Swiss Gemmological Institute stating that both pearls are saltwater natural pearls; and that the origin of both rubies is Burma (Myanmar), with no indications of heating, and that the colour may also be called 'Pigeon Blood'. 

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