Girion 24-7 Necklace Jewelry Material: K18 (18 karat gold) Color: Yellow Gold Product Number: GIB-006 Necklace Length: 42 cm Purchase Date: October 31, 2023 Delivery Date: November 30, 2023 Warranty Period: 1 year from purchase Purchase Price: 667,000 yen I measured it and it weighed 14g. I also have a platinum chain, which weighs 6g. It has a very substantial feel and is lovely. There is no warranty card. I bought it because it's supposed to be good for blood circulation, but I only used it at first and don't use it anymore, so I hope someone will take it. Thank you for looking.