Dumortierite inclusions in quartz

Weight: 2.92 g
Size: 21.7 x 13.3 x 9.7 mm


Large druse of blue dumortierite needles covering the base of clean colorless quartz crystal.
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