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. All photos have been taken indoors with daylight, but as always, computer and mobile screens display colors differently.Length: about 13mm, varies per beadWidth: about 4mm, varies per beadHole size: about .5mm to .8mm, hole size varies per beadBeads per strand: Q15 beads per strandStrand length: about 8" inches longMaterial: Picture JasperOrigin: East Asia.