These black color nugget beads are made from natural horn. The slight variations in colors and shape of the beads will make them a fun addition to your beading project. Look carefully and you will see that each bead is unique. Individual beads measure 3-8 x 4-8mm diameter with approximately 135 beads on each 28" strand. Use them as spacers or accent beads. Take note that the length of these strands are longer than usual, and finished with a nice black cord. The rustic character of these beads is sure to add an authentic touch to your jewelry designs!