This is a necklace from TAKE UP. The total length is about 40cm. There is no warranty, but I was told it is K10 yellow gold with an emerald. There is a K10 marking (see photo 4). It was a gift, but I haven't worn it and have only tried it on, so I think the condition is good. The case in the photo will also be included. Please note that the case has scratches. Please be aware that it has been stored at home for a long time, so please refrain from purchasing if you are sensitive to this. Please let me know if you have any questions. Thank you. TAKE UP Take Up K10 (10 karat gold) Emerald Birthstone May