HOUSWEETY 120PCs Birthstone Round Resin Rhinestone Fit Floating Living Locket Mixed Main Material:Resin;Main Color:Mixed Approx:4.9mm;Thickness:3mm( 1/8"); Environmental protection,beautiful appearance,light weight,convenient installation.Beware of swallowing by children. perfect DIY jewelry making charms;can be opened and add little crafts as you like Perfect findings for a variety of jewelry making. Every findings has its unique design and style and theme, hence the jewelry made with them are unique and represent your own fashion.