Soft copper wire: bracelet diameter 5.5cm (can + a few centimeters to depreciate) 20 gauge (wire diameter 0.8mm): 3 strands, ...
Soft copper wire for bracelet diameter 5.5cm 20 gauge (wire diameter 0.8mm): 3 strands, each long 40 cm (16 inch) beads: 4mm (abacus crystal) ...