Dear Collectors, On this auction we offer You a beautiful and rare Dumortierite inclusions in Quartz crystal from Brazil. Nicely terminated with lots of blue Dumortierites inside with largest crystal being 6.5 cm long. This crystal was collected from Vaca Morta Quarry in Brazil, a location that's well known for these dumortierite quartz. Dumortierite is an aluminum boro-silicate mineral that often forms as fibrous aggregations. The crystals are typically blue, however grey-blue, green and brown crystals are also common. In rare cases, the crystals can be violet or pink. Dumortierite is often found as fibrous crystals within massive quartz, with blue dumortierite included quartz (known as "dumortierite quartz") crystals being highly sought after.