Brazilian 6.00 carats cat's-eye emerald, alexandrite and diamond ring. Photo Sotheby's

Centring on a cabochon cat's-eye emerald weighing 6.00 carats, surrounded by brilliant-cut alexandrites together weighing approximately 1.30 carats, the shoulders set with brilliant-cut diamonds, mounted in 18 karat white gold. Estimate 240,000 — 300,000 HKD. Lot 1586 sold 412,500 HKD.

Ring size: 6

Accompanied by Gübelin report numbered 0909888, dated 30 September 2009, stating that the 6.00 carat cat's eye emerald is natural, of Brazilian origin, with indications of minor clarity enhancement, natural emeralds are commonly clarity enhanced.

Sotheby's. MAGNIFICENT JEWELS & JADEITE, Hong Kong,  07 Apr 2010