Modified octagonal step-cut sapphire of 5.82 carats, old and triangular-shaped diamonds, platinum

SSEF, 2025, report no. 147667: 5.822 carats, Kashmir, no indications of heating, 'royal blue', with appendix on exceptional sapphires
Gübelin, 2024, report no. 25062211: 5.82 carats, Kashmir, no indications of heating, with appendix and information sheet on unheated sapphires
AGL, 2025, report no. 1151287: 5.82 carats, Kashmir, no gemological evidence of heat, clarity enhancement: none, accompanied by an appendix letter stating "Royal Blue"

Diamonds: 10 old and 2 triangular with an approximate total weight of 1.30 - 1.50 carats

Size/Dimensions: US ring size 6
Gross Weight: 7.4 grams

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Lot Essay

Few gemstones capture the eye of collectors as powerfully as a Kashmir sapphire. Exhibiting a highly prized rich blue hue with a velvety texture unique to Kashmir stones, these sapphires display a depth of color that remain captivating under every light.

The discovery of Kashmir sapphires began in 1881, when a landslide in the Zanskar range of the northwestern Himalayas first revealed sapphire-bearing rocks. When the Maharaja of Kashmir heard of the findings of the richly colored sapphires, he quicky sent guards to protect his new mine. These sapphires became highly prized by royalty and aristocracy.

From 1882 to 1887, the mine was the source of the largest and finest stones ever discovered, making these sapphires among the rarest in the world. By 1887, the mine had been exhausted and production ceased. As a result, gem-quality Kashmir sapphires have become extremely sought after and command a much higher price premium than all other sapphires.

The term Royal Blue is reserved for the most illustrious sapphires. This color term can only be applied to sapphires that exhibit fine qualities and have not undergone any modification of color or clarity. Sapphires that exhibit a deeply saturated blue color, possibly complemented by a minute trace of purple and balanced by a vivid brightness are recognized as Royal Blue by the gemological laboratories.

Christie’s has consistently showcased and auctioned some of the most exceptional Kashmir sapphires ever discovered. In May 2025, “The Regent Kashmir," a 35.09 carat cushion shaped Kashmir sapphire sold for $9.5 million in Hong Kong. This set a new world record for highest price per carat ever paid at auction for a sapphire - $271,515.

Kashmir sapphires are not merely a gemstone, but a treasure of geological and historical significance.