12) Clear Quartz Crystal Point Tourmaline Mineral you will receive one similar

you will receive one similar as pictured

Polished Quartz crystal point

Raw Blue Calcite

Size : H 17 x 13 x 13

Polished one full face and raw natural back

12) Clear Quartz Crystal Point Tourmaline Mineral you will receive one similarPolished clear Quartz crystal point, from Madagascar Size : 14 x 6. 5 cm approx. Quartz is a mineral composed of silicon and oxygen atoms in a continuous framework of SiO4 siliconoxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO2. Quartz is the second most abundant mineral in Earth's continental crust, behind feldspar. Since antiquity, varieties of quartz have been the most commonly used