Soft copper wire : Size for rings with diameter 1.5 - 1.8cm 20 gauge ( wire diameter 0.8mm ) : 13cm ( about 5 inch) 26 gauge ...
You can flexibly change the material to suit the material you have materials I used : Soft copper wire : 20 gauge ( wire diameter 0.8mm ) : 18cm ( about 7 inch) Beads : 6mm spherical crystal Interlock ...