Sale! Black Obsidian Gemstone Bead Strand 6mm, Gemstone Bead Strand, Gemstones: Jewelry Materials for Bracelet, Necklace, Artisan Jeweler, Jewelry Black Obsidian Gemstone Bead Strand 6mm Each Strand: Approximately 6mm 1 Strand includes: Black Obsidian Gemstone Priced per bead strand