Tourmaline 9cm x 4cm x 1

9cm x 4cm x 1

Pyrophyllite From Tres Cerritos Mariposa County California MexicoSize-3

Teesdale north Pennines County Durham England Size-10

The crystals form a circular array of flat plates

Acinite From Skardu District Baltistan Northern Areas Pakistan

Tourmaline 9cm x 4cm x 1Tourmaline from minas Gerais Brazil Size 6. 3cm x 5cm x 2cm Weight 92g You will receive the item in the photo Tourmaline is a complex boron silicate mineral. It belongs to the silicate mineral class specifically the cyclosilicate subclass. Crystal system is hexagonal (trigonal). Tourmaline primarily forms in granitic pegmatites coarse grained igneous rocks,during the final stages of magma crystallization. It also commonly forms in metamorphic rocks