Material: Titanium 14K Gold Plated Hematite. 2mm - Approx 202 Beads Per Strand, With 0.8mm Hole. 3mm - Approx 140 Beads Per Strand, With 0.8mm Hole. 6mm - Approx 70 Beads Per Strand, With 1.5mm Hole. 4mm - Approx 102 Beads Per Strand, With 1.2mm Hole.