Gemstones — Iolite

Iolite, also known as Cordierite, is a mineral that belongs to the silicate group. It is a transparent to translucent gemstone that comes in different shades of blue, purple, and gray. The blue-violet variety of iolite is the most popular and is often used in jewelry. Iolite has a unique property called pleochroism, which means that it displays different colors when viewed from different angles. This property makes it a popular gemstone for designers who want to create jewelry with a dynamic appearance.The chemical formula of iolite is (Mg,Fe)2Al3(SiO4)3. It has a crystal structure that belongs to the orthorhombic system...