earth sciences - geology, geography, ecology, weather

 

Rock Tumblers

tumbled rocks

Tumbled rocks have long been very popular with collectors as they beautifully display color and details not readily apparent on rough stock. Tumbling is easy. Place rough rocks or minerals in the cylindrical drum, add a rough grit, and turn on the motor.  The grit wears off the rough edges, duplicating the erosion found in nature.