28 gauge ( wire diameter 0.3mm ) : 20cm( 8 inch) You can make a plain ring (no beads added) or decorate it with beads to make the butterfly look brilliant You can wrap the wire any way you want ...

Tutorial for making simple jewelry from copper wire, stone and bead from LanAnhHandmade ... You have a heart-shaped stone, and you want to wrap it to make a pendant, then this is the video ...