3 Guru Bead sets - 3 hole black agate gemstone Guru column Bead set 10 mm size - GB013 3 Guru Bead sets - 3 hole black agate gemstone Guru column Bead set 10 mm size Size - 3 hole guru bone bead is approx 10 mm wide . Guru column bead is approx 7 - 8 mm height x approx 6 -7 mm wide at base. Ships from USA