Material Natural Chinese black jade (Chinese black jade is market name or trade name, it is a kind of serpentine)
Size 108 plus guru beads, perimeter is approx. 32 inches, diameter of each bead is 8±0.5mm
Net Weight approx. 85 grams
Natural material, natural color. Some beads may have green shades, not pure black color, as shown in the pictures The diameter of each bead is not exactly the same, but is good enough as prayer beads mala.
Pictures under fluorescent light:
Pictures under natural light: