RO25WB Rocksmins Collection Of 2 Rock

This Collection contains 25 Types of Rare & Basic Rocks Specimens of Igneous, Sedimentary & Metamorphic Rocks Types. These Rocks & Minerals Collections used for Practical Knowledge of Rocks Specimens & Minerals Specimens. A great collection to begin your study of sedimentary, metamorphic and igneous rocks. Twenty Five representative specimens of the rock types most often included in geology textbooks. Each specimen measures approx Two inch in diameter.