A PAIR OF CHALCEDONY, DIAMOND AND TITANIUM EARRINGS, BY MARGHERITA BURGENER Each designed as a stylised flowerhead centring a sugarloaf blue chalcedony cabochon within a surround pavé-set with brilliant-cut diamonds, with removable textured blue titanium petal frame, mounted in 18K gold and titanium, with maker's mark 'MB' for Margherita Burgener, Italian assay marks, with maker's case, length 3.7cm (with petals), 1.2cm (without petals) Please note these earrings can be worn with and without the petal frame.