Andersonite specimens will usually glow a bright lemon yellow (or green with blue hints depending on the deposit) in ultraviolet light. It is commonly found as translucent small rhombohedral crystals that have angles close to 90 degrees although its crystal system is nominally trigonal. Its Mohs hardness is 2.5, with an average specific gravity of 2.8.
Andersonite specimens typically display a vibrant lemon yellow (or greenish-blue hue) under ultraviolet light. It is commonly encountered as transparent, small rhombohedral crystals with angles near 90 degrees, although its crystal structure is technically trigonal. Its Mohs hardness and specific gravity are 2.5 and 2.8, respectively.