This was purchased by my grandmother. The box is not from Mikimoto. Includes Akoya pearls. The chain is K18, and the square top is K22. I want to sell it, so I would appreciate it if you could comment with your desired price. Chain: K18 Top: K22 (Bail: K18) Pearls: 3.4mm, 2 pearls Chain: 39-43 cm (with adjuster) Top: Approximately 21 x 29 mm (width x height, including bail) A Mikimoto necklace crafted with the rich brilliance of 22-karat gold, combined with a soft, washi paper-like texture and delicate shine. This exquisite piece, along with carefully selected pearls, will add elegance to your neckline. You can use it for a long time, regardless of age!