These are calibrated diamond cut rondell gemstone beads, also known as micro cuts. The many facets give these gemstones maximum sparkle. These micro cut Apatite rondell beads measure 4 x 3mm. These beauties are from Madagascar. You will receive approximately 140 micro diamond cut Apatite rondell beads on a 15 1/2" strand. Add some of these Apatite beauties in your stash. The sparkle and color is sure to add significant bling and brilliance to any natural gemstone design.