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.

Accompanied by GIA report # 11390321, dated September 7, 2017, stating the diamond as: H color, VVS2 clarity.

Note: Graff Diamonds was founded in 1960 when Graff was just seventeen years old. Lawrence Graff established his place in jewelry history by dealing in important diamonds, both white and fancy colors. Lawrence Graff is said to have "handled more diamonds of notable rarity and beauty than any other jeweler." The Graff philosophy for every diamond ring relies on stone-led craftsmanship taking into account the rarity and uniqueness of each individual diamond.

Bonhams. FINE JEWELLERY, 4 Dec 2017, 15:00 EST, NEW YORK