MINERAL SET, 20 SPECIMENS, Each

Details

This collection contains 20 types of basic mineral specimens. The mineral specimens included in this set feature some of the following: agate, amethyst, barytes, calcite, china clay, dolomite, feldspar, fire clay, fuller's earth, graphite, gypsum, jasper, magnetite, mica, pyrolusite, pyrophyllite, quartz, soapstone, sulfur, and tourmaline. The average size of each specimen is 2 cm x 3 cm x 1.5 cm.