Sotheby’s, NY, 09-20-2012: Platinum, Sapphire and Diamond Ring


Platinum, Sapphire and Diamond ring PROPERTY OF A PHILADELPHIA ESTATE Platinum, Sapphire and Diamond Ring Estimate: 350,000 – 450,000 USD Centered by a cushion-shaped sapphire weighing 13.22 carats, flanked by two triangular diamonds weighing approximately 1.80 carats, size 2¼. This sapphire has the pedigree! Kashmir origin with no heat treatment (both Gubelin and AGL reports). […]

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Sapphire References in Antique Gemological Books

Edwin Streeter: Precious Stones Famous and Influential English Jeweler Edwin Streeter on Sapphires. He led a consortium against Baron Rodthschild for the rights of the Burma Ruby mines. Oriental Amethyst = Pink Sapphire What is Oriental Amethyst (Tavernier in 17th century) . Famous Italian Jeweler Castellani’s comments Treatments, Quality of Oriental Amethyst Engraved Oriental Amethyst

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