An impressive antique collet-set diamond lavliere necklace, suspended with two old mine cut diamonds, measuring approximately 8 x 8 mm and 7 x 7 mm, suspended from a diamond measuring 6.5 x 7 mm, the longest pendant approximately 4.2 cm long, the chain set with mixed old round and cushion-cut diamonds, 39.5 cm long, 19.5 grams, contained in original box from Hamilton & Co., 202 Regent Street.