These are an excellent quality peridot. They are clear and almost totally without inclusions. There is some size variation within the strand. There is also some shape variation: some are diamond-shaped and some are not. They are approximately 5 mm wide and 3 mm thick. Each tiny bead is faceted giving the peridot extra shine. These beads are hand-faceted, so those of you who enjoy the rustic look, will love these wonderful beads. Each strand is 16 inches long and has approximately 64 beads.