SAMPLE OF QUARTZ CRYSTAL FROM THE EMILIO MINE IN ASTURIAS WITH COMPLETELY TRANSPARENT FLUORITE CRYSTALS. SPECTACULAR COMPLETELY TRANSPARENT CRYSTAL, WITH A VERY GOOD CRYSTALLINE FORMATION. ESSENTIAL PIECE FOR 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.
