Best of Birthstones: Fabulous Sapphires at Sotheby's

Rich in colour, superb in quality and perfect alone or paired with virtually any stone, sapphires have unanimous appeal. Sotheby’s has sold some of the world’s most jaw-dropping sapphires, including Royal blue rarities originating from the long-depleted Kashmir mines. In honour of September’s birthstone, we chose some of our favourite sapphires from upcoming auctions, as well as top lots from sales past. – Stephanie Sporn