Solitaire ring in 18K (750/oo) white gold and platinum, centred on a large old-cut diamond calibrating 4.49 carats (K colour, SI2 clarity) in a setting of four small diamonds in a closed setting and within a double shoulder of three small diamonds ART DECO period - Circa 1930/1940 TDD : 51 Gross weight: 4.86 g Complete with its certificate from the Laboratoire Français de Gemmologie (LFG) dated 10 July 2025 indicating : - Treatment: no indication of treatment - Shape - Size : Round - Antique - Dimensions: 11.18 - 11.34 x 5.94 mm - Mass: 4.49 ct - Colour K - Clarity SI2 - Cut: Good - Low luminescence - Comments: Marked chips and chipping, additional facets, crystals and needles.