Amethyst ndi tripartite crystal system, crystal ndi hexagonal columnar, cylindrical surface ndi yopingasa, pali mawonekedwe akumanzere ndi mawonekedwe abwino, mapasa-crystal ndi ofala kwambiri.Kuuma kwake ndi 7. Nthawi zambiri kristalo imakhala ndi inclusions yamadzi osakanikirana kapena mapiko.