Kashmir sapphire ring leads Heritage’s record $9.7 million jewelry auction

The result mattered because the ring had entered the room with a $300,000 to $600,000 estimate and finished at more than triple the top figure. Heritage identified the sapphire as Classic™ Kashmir Origin in an American Gemological Laboratories report, a detail that carries real weight for collectors who care about provenance as much as carat weight. Kashmir sapphires are prized because the mines in Kashmir, discovered in the 1880s in the remote Zanskar Range of the Himalayas, were depleted within a few decades. When stones from the origin do surface now, they are usually drawn from private collections, which only heightens their scarcity.

That scarcity is exactly what makes the stone a proof-of-value jewel, especially for buyers comparing a museum-grade sapphire with the more approachable September birthstone pieces that fill mainstream cases. In this tier, size is not just a measurement; it is part of the rarity equation. A 6.59-carat Kashmir sapphire with documented origin sits in a different category from commercial sapphire jewelry because the market is buying geology, history and the improbability of survival as much as it is buying color.

Heritage executive director of fine jewelry Jill Burgum said the sale saw “strong, confident bidding at every level,” and the rest of the top results backed that up. A 20.03-carat fancy intense yellow Cartier diamond ring sold for $625,000, a 6.45-carat faint pink diamond brought $562,500, a 4.93-carat light pink diamond realized $500,000 and a 100.31-carat pear-shaped Mozambique Paraíba-type tourmaline reached $275,000. The breadth of the winners suggested that serious money was chasing color across the spectrum, from sapphire and diamond to neon tourmaline.