Fiber Optic Beads (cat's-eye)
Man made fiber optic quartz beads
with large holes and crystals inserted all over the bead.
Hard to find!

Shown larger than actual size

Available in:
8mm ($1.00 per bead)
10mm ($1.45 per bead)
12mm ($1.80 per bead)
14mm ($2.00 per bead)

Available colors

Silver, Black, White, Pink and Yellow

Aqua, Dark Sapphire, Emerald, Orange and Purple

See also
European Fireballs
Made of Czech Glass, also known as "Happy Beads"