Cartier Kashmir sapphire and diamond ring in platinum, circa 1915, set with a finely proportioned cut 11.90ct sapphire, sold to an online bidder for $1.9 million.

Cartier Kashmir sapphire and diamond ring in platinum, circa 1915, set with a finely proportioned cut 11.90ct sapphire, sold to an online bidder for $1.9 million.