Add one heishi spacer, one crystal tube bead and one heishi.
Make a wrapped loop on the other end. Tip: Depending on how tight you make your wire-wrapped coils, you may need to add a small seed bead or an extra wrap, to keep the bottom bead from slipping down over the coil. Or, use 22-gauge wire instead of 24-gauge wire.
Make a wrapped loop on the other end.
Use one jump ring to attach the Princess-cut crystal to one loop.