Adam's Fine Jewellery & Watches 5th December 2023

101 144 A GARNET, DIAMOND AND TITANIUM COCKTAIL RING, BY MARGHERITA BURGENER Designed as a stylised flowerhead, set at the centre with a circular-cut mandarin garnet weighing 1.63cts, highlighted with brilliant-cut diamond pistils within a surround of textured grey titanium petals, to a polished gold hoop, handmade and mounted in 18K gold and titanium, signed Margherita Burgener, Italian registry mark, with maker’s case, ring size L½ (EU 53/ US 6½) € 2,300 - 3,200 145 A PAIR OF TOURMALINE, DIAMOND AND CHALCEDONY EARRINGS, BY MARGHERITA BURGENER Each polished cushion-shaped purple chalcedony plaque set at the centre with a circular-cut blue tourma- line, within a pavé-set brilliant-cut diamond border, handmade and mounted in 18K gold, tourmalines 1.41ct total, diamonds 0.44ct total, signed Margherita Burgener, maker’s mark ‘MB’, Italian registry mark, length 2.4cm € 2,300 - 3,200 146 A TOPAZ, DIAMOND AND TITANIUM COCKTAIL RING, BYMARGHERITA BURGENER Designed as a stylised flowerhead, centrally set with a cushion-shaped blue topaz weighing 4.52cts high- lighted with brilliant-cut diamond pistils, within a surround of undulating bluish-purple titanium petals, to a polished gold hoop, handmade and mounted in 18K gold and titanium, signed Margherita Burgener, Italian registry marks, with maker’s case, ring size M½ (EU 54/ US 7) € 3,000 - 4,000