material: alloy, rhinestone size: 10*3cm metal material: the metal part is a high-density environment-friendly zinc alloy, after washing and polishing, the alloy surface is smoother and brighter glue: use environmentally friendly high-quality glue, the bonding part is firmer and the rhinestone is not dropped, ★Made of high quality alloy material, Allergy free, Nickel-free / Lead-free / Eco-Friendly , Harmless to Human Body. ★Perfect jewelry gifts