Cut approx. 20" of wire.
Thread a crimp bead to one end of the wire, thread on one side of your toggle clasp and go back through the crimp bead.
Squash the crimp to secure. 

Thread on approx. 75-80 beads onto the wire, mixing the moonstone with the crystal beads.
At the halfway point, thread on your sterling silver bail. 
Continue to thread on beads. 

Repeat step one by securing the other end of the toggle clasp with a crimp bead. 
Trim any excess wire. 

Attach a large jumpring to your Swarovski pendant and loop this onto the bail in the centre of your necklace.