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The scientific name of crystal mineral is "quartz", which is a single crystal quartz with good crystallization.
The main component of crystal is "silica", the main mineral that accounts for more than 65% of the earth's crust.
Various trace amounts of metals contained in crystal are the main reasons for the different colors.

It takes at least 8000 to 120 million years to complete the crystallization process of natural crystal rough stones,
and some even take as long as millions to hundreds of millions of years.
Crystals were formed during the earth's geological formation era, because the anhydrous silicic acid
on the earth's crust was subjected to high temperatures and pressures on the ground, causing the silicon
dioxide content in it to reach a supersaturated state. After cooling, it gradually adhered to nearby rocks and crystallized.

When crystals are still in a liquid state, they are often coated with other ores and plaster and
crystallize and grow together. Therefore, crystals are widely "symbiotic" with various minerals in nature.
Such as: rutile (later turned into hair crystal), volcanic mud (later turned into phantom crystal), etc.


Related reference books：
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There are more than 30 countries in the world that are rich in crystals, most of which come from Brazil,
Uruguay, South Africa, China and other places.

Brazil is a crystal kingdom and a major exporter of crystals. Its crystal reserves, output and
exports over the past few decades account for 90% of the world's total.

Uruguay produces some very precious crystals, but due to political, economic, and environmental reasons,
many unique minerals have been closed: (such as gold-haired crystals, green-haired crystals, etc.,
which are hard to find in the market with good quality, and are no longer new mines) body.
There are also some varieties of crystals in other countries.

The main producing areas of high-quality amethyst in the world are located in Brazil, Uruguay
and the Ural Mountains. Uruguayan crystal is also the most expensive, and its color is deep blue-purple,
which is very rare. The ore body is small and will not grow into a crystal cave.
It is almost impossible to see it on the market. Even if it is available, it is very expensive.
Generally, most of the amethysts sold in the market with good color are produced in Brazil.
The highest quality amethyst is a medium dark purple color with strong red accents.
The highest grades of amethyst will sparkle red and pink from the inside out. When buying amethyst,
generally if it has a slight cloud shape, deep purple color, and transparent crystals,
it is considered top quality.

There are many places where crystal is produced in China, but in fact, except for white crystal,
all crystals are of lower grade, not very good in color, not transparent enough, have uneven color,
and have many impurities. They are sold as mixed genuine and fake, and the price Also sold very cheaply.
Therefore, if you want to buy high-grade crystal, you must choose imported raw materials,
go to a regular store, and choose a good brand, instead of being fooled by some merchants
and vendors because of being cheap.