Blue Dumortierite Quartz Crystal Sterling Silver BraceletThis Blue Dumortierite Quartz crystal and Sterling Silver bracelet has 8 crystals attached to it. Blue Dumortierite's high Mohs hardness makes this an ideal durable bracelet. This type of Quartz was named after a French paleontologist, and his name was Eugene Dumortier. The beautiful blue that you see in this Quartz is actually inclusions. The blue color can range from light blue to almost gray blue. Blue Dumortierite is considered to be one of the