Brazilian Lemur Quartz crystals
Druse of 1st choice Lemurian Quartz crystals from Brazil.
Note: one crystal is missing, having become detached during extraction in the mine (see last photo, red circle).
Size: 15.5 cm long by 12 cm high by 11.5 cm wide for 1kg071
Chemical Formula: SiO2
Crystal system: Trigonal
Hardness Mohs' scale: 7
Definition: Quartz, found throughout the world (Brazil, Uruguay, Africa, Mexico, Bulgaria, France...). Quartz is a mineral species of the silicatec group, a subgroup of the tectosilicate group, composed of silicon dioxide, or silica. It occurs either as large colorless, colored or smoky crystals, or as microscopic, translucent crystals.