Adam's FINE JEWELLERY & WATCHES 16 May 2023

T uesday 16 th M ay 2023 . S tarting at 4 pm 128 196 A PAIROF ONYX, CHALCEDONYANDDIAMOND EARRINGS, BY MARGHERITA BURGENER Each polished circular onyx plaque set at the centre with a round-shaped lavender chalcedony cabochon, within a pavé-set brilliant-cut diamond border, mounted in 18K gold, signed Mar- gherita Burgener, with maker’s mark ‘MB’, Italian registry mark, with maker’s case, length 2.7cm € 2,800 - 3,200 197 A DIAMOND LINE NECKLACE Designed as an articulating series of box-set brilliant-cut dia- mond links with engraved detailing borders and millegrain setting, mounted in platinum, diamonds approximately 8.00cts total, length approximately 44cm € 5,000 - 6,000 198 A DIAMOND LINE BRACELET Composed of a continuous line of brilliant-cut diamonds within claw-setting, mounted in 18K gold, diamonds approximately 7.00cts total, length 17cm € 6,000 - 7,000 199 A DIAMOND DRESS RING The frontispiece set a series of collet-set brilliant-cut diamonds, to a bifurcated hoop, mounted in 18K gold, diamonds approximately 3.00cts total, French assay mark, maker’s mark, ring size N½ € 2,800 - 3,200 200 AN EMERALD, MOTHER-OF-PEARL AND DIAMOND DRESS RING Centring an oval-shaped emerald cabochon weighing approx- imately 2.30cts between applied mother-of-pearl reuleaux triangle plaques within brilliant-cut diamond frame to further rose-cut diamond borders, mounted in 18K gold, diamonds approx- imately 1.80ct total, ring size N € 3,500 - 4,500 201 A PAIR OF CHROME DIOPSIDE AND DIAMOND EARRINGS Each set with fancy-cut green chrome diopsides highlighted with single-cut diamonds, mounted in 14K gold and silver, length 3cm € 800 - 1,000