6mm Round Matte Purple Dumortierite beads from Dakota Stones. Purple Dumortierite is a striking violet-blue color with hints of lilac, grey and navy. Dumortierite is a stone that teaches you to stand up for yourself. It will help you to take control of your own life and increase your level of patience. It is named for the French paleontologist Eugene Dumortier. Found in Austria, Canada, France, Italy, Madagascar, Namibia, Nevada, Norway, Poland, Russia, and Sri Lanka. Approximately 69 beads per 16" strand.