Name QUARTZ
Variety QUARTZ (RED)
Origin Witbank, Orange River, Sudáfrtica
Hardness 7
Composition SiO2
Crystaline sys. TRIGONAL
Size   16x6,8x3,5 cm
Weight 353 gr




Description:
Quartz was chosen by the geologist Friedrich Mohs to represent grade 7 in his famous scale of hardness dating back to 1825, and which is still valid nowadays.


Back Home


QUARTZ



VARIETY QUARTZ (RED)