Lot 411. Fine 6.03 carats pear-shaped fancy intense blue diamond ring. Estimate 2,880,000 — 4,800,000 CHF (2,632,078 - 4,386,797 EUR). Sold for CHF5,626,000. Photo Sotheby's

The pear-shaped fancy intense blue diamond weighing 6.03 carats mounted as a ring, size 52, illustrated unmounted. 

Accompanied by GIA report no. 2155960569, stating that the diamond is Fancy Intense Blue, Natural Colour, Internally Flawless. 

Sotheby's. Magnificent Jewels and Noble Jewels, Genève, 17 mai 2016, 10:00 AM