BEAUTIFUL LOOSE SMOKED QUARTZ CRYSTAL FROM THE RIUDARENES AREA IN GIRONA. LARGE SIZE CRYSTAL WITH PERFECT CRYSTAL FINISH. WE CAN OBSERVE AN UNFINISHED PARALLEL CRYSTALIZATION.
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.
