28 octobre 2016
2.31 carats marquise-shaped fancy vivid blue diamond ring & 1.11 and 1.17 carats pear-shaped fancy intense blue diamond ring
Lot 308. 2.31 carats marquise-shaped fancy vivid blue diamond ring. Estimate 1,780,000 — 2,770,000 CHF & Lot 309. 1.11 and 1.17 carats pear-shaped fancy intense blue diamond ring. Estimate 595,000 — 890,000 CHF . Photo: Sotheby's. Lot 308. 2.31 carats...