Lot 1758. Pair of Brazilian Alexandrite and Diamond Pendent Earrings. Estimate 2,400,000 — 2,800,000 HKD. 2,860,000 HKD. Photo: Sotheby's.

Each set with an oval alexandrite weighing 4.78 and 4.56 carats respectively, surrounded by pear-shaped diamonds, suspended from the circular-cut diamond surmount, the diamonds stated to weigh approximately 8.48 carats in total, mounted in 18 karat white gold and platinum.

Accompanied by two Gübelin reports numbered 16081059 and 16081060, both dated 23 August 2016, stating that the 4.78 and 4.56 carat alexandrites are natural, of Brazilian origin, with no indications of treatment.