Wonderful Spessartine Crystal Minerals 7:09 PM A+ A- Print Email Photo by: © Tóth László Spessartine | #Geology Formula: Mn₃Al₂Si₃O₁₂System: Isometric Colour: Red, reddish orange, ... Lustre: Vitreous Hardness: 6½ - 7½ From from East Grants Ridge, New Mexico, USA