Assorted Rock Crystal specimens.
Well-defined specimens of rock crystal quartz from different locations: China, Mozambique, Brazil, etc.
Set of 8 units
Size: between 8 and 17 cm approx.
Weight of the set: 3,2 kg approx.
Quartz is the most abundant mineral in the Earth's crust, found in acidic igneous rocks such as granites, granodiorites, diorites, quartzites, etc., in pegmatites, hydrothermal, metamorphic, alpine-type veins and sedimentary rocks. It belongs to the trigonal crystallisation system and has a very characteristic morphology: hexagonal prism plus pinacoid.
