Blue double-wrap necklace with a crystal-decorated clasp. I'm not an expert, so I don't know the type of stone, but it's a natural stone. Please make your judgment based on the photos. - Color: Blue - Material: Natural stone - Design: Double-wrap necklace - Clasp: Crystal-decorated clasp Length: Approximately 42cm Stone size: 0.5mm How about this for the summer? It's a natural stone, but I don't know the type of stone, so please check the photos. #Click here for a list of women's items I'm selling #Click here for a list of Shimano's accessories I strive for smooth transactions and prompt shipping, so thank you for your cooperation.