Chalcedony is a kind of mineral, also known as "stone marrow". Chalcedony is a kind of quartz, SiO? cryptocrystalline body, which is a variant of quartz (cryptocrystalline). It is produced in the form of a breast or a bell milk, and is often kidney-shaped, stalactite-like, grape-like, etc., with waxy light. Chalcedony is formed under low temperature and low pressure conditions, and appears in the cavity of the ejected rock, hydrothermal veins, hot spring sediments, debris deposits and weathering crusts. Some chalcedony tuberculosis contains water and bubbles, which is very interesting. Its physical properties are the same as quartz. Chalcedony is used as a gemstone and is mainly used as a material for jewelry and arts and crafts. Chalcedony is the same mineral as the well-known agate. The cryptocrystalline quartz with a strip-like structure is agate, and the cryptocrystalline quartz with no strip-like structure and uniform color is chalcedony. Chalcedony is one of the oldest jade species in human history. In the Neolithic Age, China has appeared as a decorative item, and it has been in the past for generations. Common main colors: transparent to white is more common. There are also a handful of varieties that are bright and transparent in color. The rest, such as red, green, blue, purple, etc., also have a small number of outputs, but because of the variety of gemstones of this color. Polar Fleece Fabric,Plain Polar Fleece Fabric,Solid Polar Fleece Fabric,Bonded Polar Fleece Fabric Shaoxing Cornfield Textile Trading Co,.Ltd , https://www.cornfieldtextile.com