Quartz crystals with blue needles of Dumortierite inside. The locality, is western Bahia, near Vaca Morta Quarry, a remote and hard to reach area near the border with Tocantins state. - Photo: Jeff ScovilQuartz with Dumortierite inclusions
Precious gem variety of olivine. One of the few gems that occurs in only one color. A celestial, astronomical mineral found in meteorites. At one time, it was more valuable than diamonds. Birth stone for August.