The newly designed Classic Square Silver Ball Bracelet is a delightful and fashionable piece made of handmade polymer clay beads and luminous silver ball spacers. Each 8 mm, handmade, polymer clay bead is molded into a square shape and placed alongside lead-free/nickel-free silverball spacers. The Viva Beads. Classic Square Bracelet is strung on industrial-strength elastic string that allows easy wear and durability.