Mikimoto 4 to 7.5mm K18 WHITE GOLD special macramé technique lace collar akoya pearls necklace with case. Expert craftsmanship is required to achieve this pearl stringing. Purchased at Hanshin Department Store in 2012 Japan . Authentic ,You can tell from the M sign. Clasp K18 ●Length approx. 14.3 in . Luster: high refection . ●Pearl approx. 4 mm to less than 7.5mm ●Weight approx. 29.4g . case and soft case Cloth. A luxurious design.retail 15000USD to 290000.