Each bead varies in size, shape and color no two beads are exactly alike. Because these are natural stone beads, each one has its own character including crackling, inclusions, chips, etc... These beads are all center drilled, with the occasional bead having a slightly off center hole.These beads measure about 8mm in diameter. The holes measure about .5mm to 1mm in diameter. The strand measures about 7.5" inches long and there are approximately 24 beads on a strand.All photos have been taken indoors with daylight, but as always, computer and mobile screens display colors differently.