you can get your Cuboid Crystals at
https://www.ggctreasures.com
Learn to extend your Nanofil or Fireline by watching the video below
https://www.youtube.com/watch?v=HycMjqV_DCM&t=171s
Material list:
Approximately 40 - 4x4mm cuboid crystals
OR
40- 4mm round Firepolish beads
11/0 and 15/0 seed beads
8 or 10lb Nanofil or 4 or 6lb Fireline
A size 12 beading needle
And a clasp of your choice