18K (750/000) yellow gold and platinum ring, hallmarked "hibou" and "vieillard", set with a rounded old-cut diamond in a closed setting on platinum, flanked by four smaller old-cut diamonds. Estimated main diamond weight and quality: 5.9 x 5.9 x 4 mm approx. 0.80 carat. TDD : 61. Gross weight: 5.8 gr. High resolution photos: https://bit.ly/hdv-lausanne Exhibition : LA SALLE 20 rue DROUOT 75009 PARIS Tuesday 7 April 10 am - 6 pm and Wednesday 8 April 2026 10 am - 5 pm 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.