Material: Black Onyx Agate. The Black Onyx Mined in Brazil. 10mm - Approx 20 Beads Per 7.5" Bracelet. 8mm - Approx 25 Beads Per 7.5" Bracelet. Shape: Smooth Polished Bracelet. -Gemstone bead sizes are approximate and may have a +/- 0.5mm difference.
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