From Black to Grey Gemstones

Gemstone, hematite, 10x10 mm, round beads – A-grade, Mohs' hardness 5.0-6.5 – one unit is +/- 20 cm and has +/- 19 beads

Gemstone, black coated serpentine, 10x10 mm, round beads – B-grade, Mohs' hardness 2.5-6.0 - one unit is +/- 20 cm and has +/- 20 beads

Gemstone, labradorite, natural, 10x10 mm, round beads - AB-grade, Mohs' hardness 6.5-7.0 - one unit is +/- 19 cm and has +/- 19 beads

Gemstone, labradorite, Canada, natural, 10x10 mm, round beads – A-grade, Mohs' hardness 6.5-7.0 - one unit is +/- 19 cm and has +/- 19 beads

Gemstone, larvikite, natural, 10x10 mm, round beads – Mohs' hardness 6.0-6.5 - one unit is +/- 20 cm and has +/- 19 beads

Gemstone, natural volcanic or lava rock, warm black grey dyed, 10x10 mm, round beads – Mohs' hardness 3-3.5 - one unit is +/- 19 cm and has +/- 19 beads

Gemstone, natural Malaysian jade or chalcedony, black dyed, 10x10 mm, round beads - translucent - Mohs' hardness 6.0-7.0 - one unit is +/- 19 cm and has +/- 19 beads

Gemstone, natural striped agate, black dyed, 10x10 mm, round beads - Mohs' hardness 6.5-7.0 - one unit is +/- 19 cm and has +/- 19 beads

Gemstone, natural striped agate, black dyed, 10x10 mm, round beads - Mohs' hardness 6.5-7.0 - one unit is +/- 19 cm and has +/- 19 beads

Gemstone, natural striped agate, black dyed, 10x10 mm, round beads – faceted - Mohs' hardness 6.5-7.0 - one unit is +/- 19 cm and has +/- 19 beads

Gemstone, rainbow obsidian, natural, 10x10 mm, round beads - Mohs' hardness 5.0-5.5 - one unit is +/- 20 cm and has +/- 19 beads

Gemstone, snowflake obsidian, natural, 10x10 mm, round beads – Mohs' hardness 5.0-5.5 - one unit is +/- 20 cm and has +/- 19 beads