Cut 1x 55cm length of wire and 1x 63cm length of wire. Place the curved tube through both strands and find the centre of the wire, put a crimp bead either side of the tube and crimp in place. 

On one side, start threading the crystals onto the longer length of wire until you have threaded approximately 120 beads onto the strand. Now attach the wire to your lobster clasp. 

With the shorter wire, place a crimp bead either side of a crystal bead and crimp in place, repeat this 10 times.  Attach the wire to your lobster clasp.

Repeat steps 2-3 on the other side of the necklace and attach your wire to a jump ring. Add another jump ring so that you can clip your lobster clasp to it.