Many people call any stone a rock; that is totally INCORRECT!!!!!! . Okay, lets call Rocks, Minerals, and Gems, just plain stones. Rocks are made… well, here I will explain the three* types of Rock, Igneous, Sedimentary, and Metamorphic:
Sedimentary Rocks are made of Minerals compacted firmly together to form rocks such as Limestone (photo 3) and sandstone.
Metamorphic Sorry, but I cannot write about this until I can get a photo of Marble