Aventurine is a variety of quartz in which there are inclusions of other minerals that give it different colors. The name derives from the Italian "per adventure", "by chance". In fact, in the 1700s, a Venetian worker accidentally dropped some metal filings into a vat of molten glass and obtained, by chance, artificial aventurine. The most common color of aventurine is green, which is due to the presence of fuchsite mica. The presence of muscovite mica, on the other hand, gives the aventurine silvery reflections, while the presence of hematite gives it a red color (oriental aventurine or sunstone). There is also artificial aventurine (gold stone), reddish or greenish in colour, obtained by adding copper and chromium respectively to the quartz glass.
Dimensions
Height (cm): 3.4 approx
Depth (cm): about 1.5
Width (cm): 1.6 approx
Weight (g): 15
Property
Chemical formula: SiO2
Mohs scale: 7
Relative Density: 2.65
Crystal System: Trigonal