Welcome guys! it's nice to be back after a long break.
I just came across two Kashmir sapphires that featured at Sotheby's Hong Kong Magnificent Jewels & Jadeite Sale - April 06, 2015.
These are lots 1915 and 1707.
Lot 1915 contains a medium-sized, cushion-cut Kashmir sapphire weighing 11.21 carats mounted on a size 6 platinum ring and created a significant impact by becoming the 3rd highest selling lot of the sale, registering a hammer price of HKD 16.28 million (USD 2,099,794), which was above the estimated range of HKD 12-15 million (USD 1,547,760 — 1,934,700). The PPC-value of this Kashmir sapphire works out to US$ 187,314. As at April 06, 2015 this Kashmir sapphire has the 3rd highest ppc-value according to your list above.
Lot 1707 is another Kashmir sapphire ring, but contains a much smaller sapphire weighing only 3.55 carats and sold for HKD 1,750,000 (US$ 225,715), slightly above the estimated range of HKD 1,400,000 — 1,600,000 (US$ 180,572 - 206,368).The ppc-value of this sapphire works out to US$ 63,581.The oval-cut sapphire was the centerpiece of a 18k white gold cluster ring, surrounded by eight oval diamonds and embellished by circular-cut diamonds extending to the shoulders.