Tourmaline - Natural minerals and crystals

Tourmaline is a group of minerals belonging to the silicate family. Its complex chemical formula reflects its crystalline structure and variable composition. This variability explains the range of colors that tourmaline can present, from black to red, through green, blue and pink. The chemical elements present in the crystalline structure, such as iron, manganese or chromium, are responsible for this chromatic diversity. Tourmalines form in a variety of geological environments, including igneous raw rocks and minerals">rocks, metamorphic raw rocks and minerals">rocks, and hydrothermal veins. They are often associated with other minerals such as quartz, feldspar, or mica. tourmaline crystals can occur in a variety of shapes, ranging from needles to columns, and can reach impressive sizes. tourmaline is hard, wear-resistant, and has a vitreous luster. In jewelry, tourmaline is valued for its beauty and variety of colors. It is faceted and used to make jewelry such as rings, pendants, and earrings.