♢ Product Size Length: 45cm (with a 40cm adjuster) Other sizes are available. Weight: Approximately 2.2g Standards: Made in Japan K18 (K18 hallmark present) K18 is made in Japan, 18k is made overseas. ♢ Product Description This product is of the same high quality as 18-karat gold sold in department stores and jewelry stores. It is not 18-karat gold plating, but solid 18-karat gold, so there is no worry of it peeling off. The "K18" hallmark, which is proof of genuine 18-karat gold, is also engraved.