30 novembre 2017
A magnificent 16.53 carats diamond ring, Graff
Lot 186. A magnificent 16.53 carats square-shaped emerald-cut diamond ring, Graff. Estimate US$ 550,000 - 750,000 ( €460,000 - 630,000 ) . Sold for US$ 660,500 (€557,431). Photo: Bonhams. centering a square-shaped emerald-cut diamond, weighing 16.53 carats,...