All of you / children / geologists wants to learn about minerals. They want to know its physical properties like hardness, colour, fracture, cleavage, streak, luster, tenacity, specific gravity, feel properties, odur/taste, magnetic/non magnetic, acid reaction. So rocksmins minerals science activity kit is the complete solution for young geologists/students. This activity kit contains 20 types of minerals specimens, streak plate, glass plate, copper plate, iron plate, garnet board, knife, iron nail, magnet, hand lens, folded lens, acid drop bottle (Empty) with instruction manual, rocks worksheet & rocks / minerals crossword game chart all neatly packed in a compartment box. This activity box contains 20 types of basic specimens. Specimen names change time to time without any notice for making variety or lack of stock. Description These Rocks & Minerals Collections used for Practical Knowledge of Rocks Specimens & Minerals Specimens.