Sapphire and diamond 'convolvolo' brooch, Michele della Valle. photo courtesy Sotheby's Designed as a flowering branch of convolvulus, set with circular-cut sapphires and brilliant-cut diamonds, mounted in white gold and titanium, signed Michele della...

Pair of cushion-shaped peridot, tsavorite and pink sapphire ear clips, Michele della Valle Each set with a cushion-shaped peridot, to a surround of circular-cut tsavorites and pink sapphires, mounted in pink gold, signed MdV and numbered, pochette. Est....