Add a touch of nature to any space with these beautiful Marimo moss ball jars. Included with each set is a cylindrical glass jar (9.5cm x 4.5cm) with secure cork lid, gravel base layer, specially selected natural decorative stones and a vibrant green moss ball. Just add water to the jar and refresh every few weeks and these beautiful little Marimos will look after themselves. Marimo balls are generally 1-3cm but vary in shape.