Dumortierite inclusions in quartz

Weight: 1.75 g
Size: 15.4 x 9.7 x 8.1 mm


Blue needles of dumortierite included in colorless quartz. Nice light blue stars in the volume of clean quartz.
More information about this spectacular and relatively new material:
Gems and Gemology, Spring 2015, Vol. 51, No. 1
“Between a rock and a hearty place” blog

Sample type: unpolished crystal
Origin: Vaca Morta quarry, Serra da Vereda, Boquira, Bahia, Brazil