In the video I use for the ring 1.5cm in diameter : 20 gauge ( wire diameter 0,8mm ) : 25cm (10 inch) Wire length = number of ...
I used : abacus crystal : 20 bead 4mm, 20 bead 6mm Soft copper wire 20 gauge ( wire diameter 0.8mm ) : 2 strands, each 45cm ...