Like the Mystic crystals these water beads are polymer pearls, made by simply adding water. This causes them to expand into perfect miniature spheres. Use them to add some extra color to your decorating scheme. They are available in many popular colors including CLEAR, WHITE, BLACK, GREEN, PINK and BLUE. Use separately or mix colors in one vase for a stellar effect! One package will create approximately 5.75L or 1.5 gallons of hydrated water pearls.