LARGE SIZE QUARTZ CRYSTAL MIXED WITH MICROCLIMATE OR ORTOSA, FROM LA CABRERA IN MADRID. GOOD QUALITY QUARTZ POINT THAT CANNOT BE MISSING IN YOUR COLLECTION.
Quartz is the most common mineral, the most abundant that can be found on earth.
It is composed of silicon and oxygen with SiO₂ formula.
According to the Nickel-Strunz classification, quartz belongs to the class of oxides, while in the Dana classification, it is considered a tectosilicate.
There are multiple varieties of quartz , colors and types.
