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Prasiolite a mineral from the quartz group.
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Quartz is the most common mineral. It comes in a wide variety of colors, shapes and varieties. Pure colorless quartz is referred to as a rock crystal.
In ancient times it was already a well-known and valued mineral, its name comes from the Greek word 'krustallos', meaning ice. The Greeks and Romans believed that quartz was an ice that did not melt because it was created by the gods.
Quartz occurs in nature in very diversified forms, ranging from perfectly formed crystals to fine-grained and compact clusters. The most magnificent quartz crystals are found mainly in rock void among coarse-grained granites, in pegmatites, in some ore veins and in crystalline shales. Quartz is the most abundant mineral in the earth's crust and accounts for over 12% of its composition.
Some transparent types of quartz have very interesting inclusions containing other minerals, which increase the value of the jewelery. These are, for example, green chlorite flakes, actinolite needles, tourmaline or brown rutile.
The perfection of shapes and the splendor of colors made it a more and more sought-after decorative stone. Many varieties of quartz are used to make beautiful jewelry, figurines, cameos or decorative elements, such as clocks.
Currently, the richest deposits of quartz crystals are in Madagascar and Brazil.
Prasiolite, the name comes from the Greek 'prasios' green and 'lithos' stone.
A mineral that occurs in nature is extremely rare. It is a type of quartz with a very bright green, chives color.
Prasiolite owes its green color to the presence of numerous inclusions of green actinolite, which contains iron and aluminum. The delicate shade of green meant that in the past this stone was used much more often than today for the production of ornaments, mosaics and jewelry. Natural prasiolite is usually found in geodes, and in most cases they are found in places where amethysts are present.
Occurrences: India, Russia, South Africa, Zimbabwe.
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