In this category you will find natural stones and minerals from all over the world: crystals, crystal clusters, geodes, polished pieces, fossils and loose cut gemstones. Collector specimens as well as stones for the interior, from Madagascar, Brazil and Arizona among others, and regional stones from the Czech Republic. For pieces with a known locality, we state it in the description.<\/p>","link":"https:\/\/4cminerals.cz\/en\/product-category\/minerals\/","name":"Minerals","slug":"minerals","taxonomy":"product_cat","parent":0,"meta":{"details":"
According to the definition of the International Mineralogical Association, a mineral<\/strong> is an element or chemical compound that is usually crystalline and formed by geological processes. Examples of minerals are quartz, fluorite or malachite. A rock is a natural solid substance forming the Earth's crust, which usually consists of a varied mixture of different minerals (e.g. granite made of quartz, feldspar and muscovite) or of organic remains (for example limestone formed by the calcareous shells of various marine organisms). In exceptional cases, a rock may consist of a single mineral (for example marble of calcite), or it may be amorphous and non-crystalline \u2013 volcanic glass is an example. A fossil<\/strong> is the remains or imprint of an ancient organism preserved in the Earth's crust, such as an ammonite or petrified wood.<\/p>\nHow to find your way around this category<\/h2>\n
Stones by type<\/h3>\n