You can use stone or crystal beads with a diameter of 2 - 6mm, 2 or 4 beads as you like * In the video I use : 20 gauge ( wire diameter 0.8mm ) : 25cm( 10 inch) 2 crystal beads 4mm in diameter ...

Length 20 - 30 cm ( 8 - 12 inch). Number of wire from 3 to 6 strands can be used crystal beads 4 - 8mm diameter With rings : can use wire with diameter from 0.6 - 0,8mm ( 22 gauge - 20 gauge ...