Lyon & Turnbull
An Impressive single stone diamond ringclaw set with a large emerald cut diamond, the gallery with scrolling detail set with small round cut yellow diamonds, each shoulder collet set with a kite shaped diamond, the triple row shank set with small round brilliant cut diamonds, the setting by Cairncross of Perth
Ring size: M/N, principal diamond weight: 20.13cts
Estimate £ 40,000-60,000

Sold for £93,750 (buyer's premium included)