A hydrated iron phosphate, initially colorless but oxidizes to deep blue or greenish-blue upon light exposure. It's a stone of peace, compassion, and deep intuition, aiding in goal setting and removing negativity from one's energy field.
Colorless (fresh), Dark Blue to Greenish-Blue (on exposure to light)
Vivianite is classified as a phosphate mineral vivianite group mineral which typically crystallizes in the monoclinic system. Its chemical formula is Fe2+3(PO4)2·8H2O. Common crystal habits include flattened, elongated prismatic crystals, may be rounded or corroded; as stellate groups, incrustations, concretionary, earthy or powdery.