these dramatic and colorful massive specimens are perfect for an art museum, but as a recovering mineralogist I feel like the true beauty of the world of minerals in Earth is shown on the microscopic level, where you can see both the incredible order and incredible randomness of the (mostly) crystalline solids that make up minerals. See https://en.wikipedia.org/wiki/Thin_section

There is an idea that minerals are these inorganic substances but fully two thirds of all minerals identified were originated from direct or indirect interaction with living things on Earth. In fact a recent hypothesis holds that minerals have evolved since the formation of the solar system very much like living things, getting more and more complex via selective processes. See https://hazen.carnegiescience.edu/research/mineral-evolution