Ring in 18K white gold (750/000) set with a sapphire in a diamond setting. TDD: 55/56. Gross weight: 7.5 g. The sapphire is rare because it has not been "heat-treated" and is accompanied by a certificate from the American Gemmological Americans dated August 6, 2015, stating: Identification: - Type of mineral : Natural corundum - Variety: Sapphire - Colour description : Blue - Shape : Octagonal - Weight in carats : 7.19 carats - Dimensions: 12.94 x 7.89 x 7.06 mm Origin : - Provenance: Ceylon (Sri Lanka) Treatment : Standard: No heat treatment. Comments : Unheated sapphires are rare. Sapphires are generally heated to modify their colour and appearance. Attached: Certificate from the American Gemological Laboratory. High resolution photos: https://bit.ly/hdv-lausanne Exhibition : LA SALLE 20 rue DROUOT 75009 PARIS Tuesday 7 April 10-18 H and Wednesday 8 April 2026 10-17 H Live sale behind closed doors 1004 LAUSANNE - SWITZERLAND : Friday 10 April 2026 2 pm Delivery of lots free of transport costs to PARIS, LYON, MARSEILLE and LAUSANNE a few days after the sale. Or shipment from FRANCE at the buyer's expense by the carrier of his choice.