‘Toi et Moi’ ring in 750/°°° yellow gold and platinum with a fineness of over 800/°°°° set with an unheated Burmese ruby, accompanied by a GEM PARIS certificate for a 3.90-carat diamond (LFG cut), flanked on either side by further diamonds. Early 20th century. Ring size: 54. Gross weight: 6.40 g. In a contemporary ring box signed Frédéric Boucheron, 26 Place Vendôme, Paris. Expert: Ms Anne PELLERIN Additional photographs are available on request.