Genuine umbonium seashells. Each individual bead is unique in both colour & size. However, they all have a natural speckled pattern in various shades of green & grey following the spiral shape of the shells surface, & a plainer cream underside. Each bead has a hole through the centre lengthways for threading & varies in size from Approx. 4 to 7mm. When all the beads are strung together, they measure 26cm in length.