You can purchase the crystals i used in this tutorial at:
https://budgetbeadbox.com/
Learn to extend your fireline or Nanofil here:
https://www.youtube.com/watch?v=HycMjqV_DCM&t=52s
Material List:
108- 4x4 mm cuboid crystals
8x4x4 mm Bicone crystals 72- of one color
90- of another color
11/o and 15/o Toho seed beads
a toggle clasp
8lb Nanofil or 6lb Fireline
a size 12 beading needle
