13.3 cts Hyper Rare. Dumortierite Quartz Crystal Flattish Backed Cab. 1 Piece Quartz Specimen. 9013

Dumortierite-rich Quartzite!

Weight 13.3 Cts

Length 12mm
Width 6mm
Height 22mm

Please disregard the item weight in the shipping section.
Origin uncertain, likely Bahia, near Vaca Morta Quarry, in Brazil.

"Named to honor French paleontologist from Lyons, Eugene Dumortier. Dumortierite is somewhat uncommon, but has many localities including in France, Poland, the Czech Republic, the United States, Canada, Namibia, Madagascar, India, and additional minor localities. It occurs in aluminum-rich metamorphic rocks as disseminations and in veinlets cutting through schists, and in pegmatitic veins. Minerals associated with dumotierite include quartz, cordierite, kyanite, andalusite, sillimanite, muscovite, and rutile." - http://www.dakotamatrix.com/mineralpedia/5888/dumortierite

More on this kind of stone at: http://betweenarockandaheartyplace.blogspot.com/2015/02/quartz-with-dumortierite-inclusions.html

Origin uncertain, likely Bahia, near Vaca Morta Quarry, in Brazil.