Adam's FINE JEWELLERY & WATCHES 13th September 2022

T uesday 13 th S eptember 2022 . S tarting at 4 pm 90 120 AN AQUAMARINE, SAPPHIRE AND DIAMOND BRACELET The openwork strap of stylised chevron design, set with a row of circular-cut sapphires between cut-cornered step-cut aquamarines within a border of brilliant-cut diamonds, mounted in 18K gold, length 18.5cm € 7,000 - 8,000 121 A PAIR OF SAPPHIRE, DIAMOND AND TITANIUM EARRINGS, BY MARGHERITA BURGENER Each titanium plaque set throughout with circular-cut sapphires of various blue tint, accented with brilliant-cut diamonds, the reverse highlighted with a diamond-set panel, mounted in blue titanium and 18K gold, sapphires 9.35cts total, diamonds 0.80ct total, signed Margherita Burgener, with maker’s mark, Italian registry mark, with maker’s case, length 2.5cm € 4,000 - 5,000 122 AN AQUAMARINE AND DIAMOND COCKTAIL RING, BY MARGHERITA BURGENER The pear-shaped aquamarine weighing 6.92cts within a four-claw setting to a brilliant-cut diamond frame and belt and be- tween similarly-cut diamond shoulders, mounted in 18K gold, diamonds 1.12cts total, signed Margherita Burgener, Italian registry mark, with maker’s case, ring size M½ € 3,500 - 4,500 123 A SAPPHIRE AND DIAMOND CLUSTER RING The cushion-shaped sapphire weighing 5.70cts set in a four-claw setting within a brilliant-cut diamond frame, mounted in 18K gold, diamonds approximately 1.20cts, ring size M € 8,000 - 9,000 Accompanied by a report fromThe Gem & Pearl Laboratory in London stating that the sapphire weighing 5.70cts is of Sri Lankan origin, with no indication of heat treatment. Report no. 18772, dated July 28th 2020.