Smooth polished Rectangle beads, or 'brick' shaped beads are made from Blackstone. Current stock of these beads is very uniform in size, shape and appearance which makes us think that these are made from re-assembled gemstone. Beads range in size from about 6x3.5x3.5mm to 8x4.5x4.5mm. Sold on 14.5-15 inch long strands.
NOTE: Because this is an economy strand there may be broken, poorly shaped or mis-drilled beads on each strand.