Dumortierite inclusions in quartz

Weight: 2.61 g
Size: 16.9 x 13.5 x 7.1 mm


Large druse of blue dumortierite needles coering 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