I purchased this at a department store and have only used it a few times. I can provide an authenticity guarantee for those who are concerned. Please let me know if you would like one (^^) Made of platinum, so you don't have to worry about discoloration, and it will stay beautiful for a long time. The material is platinum 950, and it comes with a storage bag. The chain is approximately 40cm long, and the charm is a cute, mini-sized open heart, about 1cm in size. It's a subtle size, so I think it's easy to wear every day.