An oval cut diamond ring by Graff weighing 24.30 carats, of D colour and Internally Flawless clarity. Estimates SFr 2,600,000- 3,200,000 (US$ 2,900,000- 3,500,000)

An oval cut diamond ring by Graff weighing 24.30 carats, of D colour and Internally Flawless clarity. Estimates SFr 2,600,000- 3,200,000 (US$ 2,900,000- 3,500,000)