Thuringite is a rare mineral that is primarily composed of corundum and spinel. It is also known as ruby spinel or pleonaste, and is found in metamorphic rocks and volcanic ejecta. Other names for Thuringite include maghemite and hydromagnesite. There are several synonyms for Thuringite that all refer to similar minerals, including magnetite, hematite, and ilmenite. These minerals share similar chemical compositions and physical properties with Thuringite, although they may have different colors and crystal structures. Despite its rarity, Thuringite is valued by collectors and used in some industrial applications, such as abrasives and refractory materials.