Marquise ring, double-thread setting in 750°°° white gold from the 1960s. In the centre a large navette-cut diamond. Dimensions: 15.6 x 8.15 x 4.80 mm, representing a retained weight of approximately 3.50 carats. Estimated quality: G colour - P1 clarity. Surrounding: two rows of brilliant-cut diamonds. Row 1: 16 diamonds estimated at approximately 0.15 carat each, for a total of approximately 2.40 carats. Row 2: 12 diamonds estimated at around 0.10 carat each, for a total weight of around 1.20 carats. The ring is set with 16 baguette diamonds totalling approximately 1 carat. Gross weight: 8.7 g. TDD 55