Building, stacking and finding just the right balance with these organic, round stone shapes is challenging and fun. Enrich small worlds of your own creation: add to a river (silk scarf), make a cave, present a stony landscape or build a cairn. Perfect in combination with our Elements: Fire (10730/10780), Water waves (10720/10770) and Earth (10740/10790). 4 pieces in shades of blue. Materials: lime wood, non-toxic water based color stain.