Thank you for viewing. This item belonged to my grandmother and is being sold as part of an estate sale. It is stamped K18. Weight is approximately 1.26g (please check the photos). There is no certificate of authenticity. There are conditions for buyers. Please be sure to read them. 〇 Those with many negative ratings may be refused a transaction as they may cause trouble. 〇 Returns are not accepted after purchase to prevent theft and item substitution. 〇 Because there are no buyers, the details are unknown. Therefore, the exact material of the item is unknown. 〇 Please refrain from asking questions that duplicate this content. Thank you for your understanding. Please purchase only if you agree to the above.