Add a touch of nature to any space with these beautiful Mini moss ball jars. Included with each set is a beautiful glass jar 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 moss balls will look after themselves. Sizes: Small Jar: Height 7.5cm x Diameter 5.5cm (1 moss ball) Large Jar: Height 11cm x Diameter 8.5cm (2 moss balls) Moss balls are generally 1-3cm but vary in shape.