Crystal is a solid material whose atoms are arranged in a highly ordered, repeating pattern. This unique structure gives crystals their beautiful shapes and vibrant colors. Common examples of crystals include quartz, diamond, and salt. They can form naturally in the earth or be created artificially in laboratories. Crystals are not just pretty to look at; they also have various uses. In technology, quartz crystals are essential in watches and electronics for keeping accurate time. Additionally, many people believe that certain crystals, like amethyst and rose quartz, have healing properties and can promote emotional well-being.