The origin of the name could not be clarified until today.
There are different approaches to this: for example, the "quartz or quarz" from Middle High German, which is related to the Latin term for gravel or rock "quartzum". The term quartz is common worldwide, and knows only minor modifications in other languages.
Apart from pure quartz or such with various inclusions, quartzite is also known, a rock whose largest proportion is quartz. (at least 80%). The other ingredients are chlorite, magnetite or hematite, feldspar or the like.
Quartzite was the rock of the year in 2012.
The occurrence of quartz
The different growth forms of quartz have created their own terms.
For example, the Ticino habitus, where the crystal form contains very large rhombohedral surfaces, or the thread quartz, which arises when a cleft crack occurs during growth and tears the crystal apart. Thereafter, the two crystals grow together again, and the crack remains visible as a thin thread. A special form are so-called crystal twins. The two chiral forms right and left quartz appear fused together in this case.
The pink rose quartz occurs, for example, in Germany, Namibia, Brazil and Madagascar. Rutile crystals occur in Pakistan and Austria and China.
Quartzites occur within Germany in the Eifel and in the Rhenish Slate Mountains, in the Harz and in the Ore Mountains, as well as in the Taunus and Hunsrück.
Pure quartz is found worldwide.
Emergence of the quartz
Quartz occurs in various metamorphic rocks, such as schists and gneisses.
Various mineral reactions ensure that quartz degrades or forms. Especially in sandstones it can be found. Particularly well-trained quartz crystals are apt to develop in passages and caves as well as fissures, so-called geodes. If quartz is exposed to higher temperatures than 573 degrees Celsius, it changes to high quartz.
Completely pure quartz, which has no inclusions, is known as rock crystal.
Properties of the quartz
Hardly a mineral produces so many known varieties as quartz.
In itself it is a hard mineral with a Mohs hardness of 7, and consists of crystals in different shapes and colors. The crystal surfaces are shiny like glass; Quartz has no cleavage and breaks like glass. The breakages then have a greasy finish. The density is given as 2.65. Although other colors occur, it is usually colorless to white. In this case, the quartz is known as rock crystal. Milk quartz, that is somewhat cloudy crystals, are formed by the microscopic inclusions of liquids and gases. If colored ions are included, quartz can take on very different colors. The stroke color is also white. The transparency of quartz is between transparent and opaque, depending on the species. Quartz reacts only with flux acid. Interesting is the so-called piezoelectric effect, which is responsible for the fact that pressure or train a quartz crystal reacts with electrical polarization. Applying electrical DC voltage causes rotation and compression of the crystal.
Resonant vibrations can be achieved when AC voltage is applied.
Effects of quartz as a healing stone
The rose quartz should act on blood and heart.
They promote blood circulation and combat phlebitis and thrombosis. The rose quartz acts on diseases of the sexual organs and activates the sexuality. In addition, the stone can help against headaches and cold, support the circulation and help against blemished skin.
The pure quartz, the rock crystal, has a positive effect on the skin and eyes, relieves pain and regulates digestion. It can help with inflammation and improve the immune system, helps against irritability and addictions, dreadfulness and trauma.
The rock crystal was until the 18th century a remedy for nausea and indigestion.
Hildegard von Bingen expressly pointed to the importance of the stone in terms of ulcers and eye disorders.
Effects on soul and feeling
Depending on the closer name, the quartz is used against various problems.
The rose quartz, for example, helps with fears and mental injuries, homesickness and stuttering. He promotes personal responsibility and helpfulness. The quartz itself is said to protect against harmful rays.
The rock crystal dissolves blockages, helps against absent-mindedness and promotes self-knowledge, memory and logic, clarity and creates energy.
Effects for the pure spirit
The rose quartz is considered the birthstone of bull and libra as well as cancer.
His chakra assignment is the heart. The Rutilated Quartz, on the other hand, is assigned to the twin-born and also affects bull, lion and Aquarius. An assignment to the crown chakra and the signs of the zodiac Virgo, Leo, Aquarius and Capricorn is experienced by quartz in its purest form, the rock crystal. The different quartzes like the rock crystal are well suited for meditation and are also used frequently. The unpolished, raw stone symbolizes the yang plane and the dominant. Processed rock crystals like the Tumbled Stone stand for the Yin energy and the harmony.
The stone is considered a combination of both energies, which makes it particularly valuable in the sense of esotericism.