Agate is a colorful and hard mineral, belonging to a variety of quartz. It has a layered structure, usually displaying rainbow-like stripes with rich colors. Common colors include white, gray, red, blue, green, yellow, and many others. Different colors can even feature transitional color bands and natural patterns. Each piece of agate is unique in…
Diamond is a natural gemstone and an allotrope of carbon, primarily composed of pure carbon elements. Its structure consists of a highly regular and tightly packed three-dimensional crystal lattice formed by covalent bonds between carbon atoms. This structure gives diamonds their exceptional hardness and luster. With a Mohs hardness of 10, diamonds are the hardest…
