Gemstone, African bloodstone (also called Seftonite or vulcan jasper), natural, 4x6 mm, rondelle beads – Mohs' hardness 6.5-7.0 - one unit is +/- 19 cm and has +/- 46 beads
Gemstone, Dalmatian jasper or Dalmatian stone, Mexico, natural, 4x8 mm, saucer-shaped beads – Mohs' hardness 6.5-7.0 - one unit is +/- 19 cm and has +/- 46 beads
Gemstone, spiderweb jasper or black veined jasper, natural, 5x10 mm, rondelle beads - Mohs' hardness 6.5-7.0 - one unit is +/- 19 cm and has +/- 33 beads