CONCH PEARL AND DIAMOND PENDANT NECKLACE Oval conch pearl of approximately 8.76 x 7.52 x 6.78 mm, briolette and circular-cut diamonds, gold, 45.5 cm (length adjustable) GIA, 2018, report no. 5192622788: one undrilled pearl, natural saltwater pearl, no indications of treatment US$15,000-25,000