7cm diameter sphere. Square base, 7cm length, 2cm height. 600g. Felt base to protect surfaces. Use in your bath, a footbath, laundry, for soaking vegetables and more. Hold in hands to relax or meditate. One in each hand is recommended. Men often prefer this size to the 5cm sphere. The base is also made from shungite, so you can use it similarly to how you would use the shungite plate.