SPECTACULAR DOUBLE CRYSTAL ON AMETHYST QUARTZ MATRIX. VERY GOOD COLOR TONE, WITH THE TRANSPARENT BASE AND THE TIPS WITH THE TYPICAL AMETHYST TONE. THIS PART IS REMOVED FROM THE UNION. COLLECTION PIECE.
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 class of oxides, while in the Dana classification, it is considered a tectosilicate.
There are multiple varieties of quartz, colors and types.
