I bought this at Chanel in Ginza. It is guaranteed authentic. The stamp is B22K. You can find the same product online, so please check the stamp if you have any concerns. The whole piece sparkles, but the three-leaf clover part looks like crystal and is especially cute! ☺︎ This item sold out quickly, so if you're looking for it, don't miss out! The number of items in stock was also small, so they are not widely available. There are no accessories such as a box. Only the earrings and the catches will be shipped. The catches have delicate scratches. Please refrain from purchasing if you are sensitive to this.