Quartz And Green Tourmaline Crystals is a photograph by Roberto De Gugliemo/science Photo Library which was uploaded on September 16th, 2018.
Quartz And Green Tourmaline Crystals
An aggregate of colourless quartz and dark green tourmaline crystals. Quartz (silicon oxide) is colourless when pure, but the presence of impurities... more
Title
Quartz And Green Tourmaline Crystals
Artist
Roberto De Gugliemo/science Photo Library
Medium
Photograph
Description
An aggregate of colourless quartz and dark green tourmaline crystals. Quartz (silicon oxide) is colourless when pure, but the presence of impurities can give a range of colours including white, pink, yellow, blue, green and smoky brown. The pure, colourless variety is known as rock crystal and is highly prized by collectors. Tourmaline is a complex silicate of aluminium and boron and can also occur in many different colours. This specimen measures 14 x 12 cm and was found in Conselheiro Pena, Brazil.
Uploaded
September 16th, 2018
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