In the video I use for the ring 1.5cm in diameter : 20 gauge ( wire diameter 0,8mm ) : 32cm (13 inch) Wire length = number of circle rings x ring circumference + 10cm ...
Beads : crystal 4mm Soft copper wire 26 gauge ( wire diameter 0.4mm ) : 40cm ( 16 inch) 20 gauge ( wire diameter 0.8mm ) : 2 strands, each 40cm ( 16 inch) ...