WE PRESENT THIS SAMPLE OF DOUBLE CRYSTALLIZATION OF AMETHYST QUARTZ FROM THE AREA OF VERACRUZ IN MEXICO.
Quartz is the most common mineral, the most abundant that can be found on earth.
It is composed of silicon and oxygen with the formula SiO₂.
According to the Nickel-Strunz classification, quartz belongs to the oxide class, while in the Dana classification, it is considered a tectosilicate.
There are multiple varieties of quartz , colors and types.
