This is a handmade item, so it is one-of-a-kind. While I cannot guarantee its strength, it uses stainless steel wire, making it difficult to break and resistant to rust. Please handle it with care, such as avoiding contact with water. The bracelet uses natural crystal (quartz) tumbles. Quartz is believed to have purifying and protective effects. Length: Approximately 18.5cm Instant purchase available. Please feel free to comment if you have any questions.