Crystals also display a phenomenon known as piezoelectricity, where they generate an electric charge when mechanical stress is applied to them, and vice versa. This property makes crystals valuable in various technological applications, such as in electronic devices like microphones, sensors, and watches.

Moreover, crystals have been associated with various metaphysical and spiritual practices because of their vibrational properties. Many people believe that different types of crystals possess specific energies and can be used for healing, meditation, and promoting positive vibrations.

Overall, crystals are fascinating natural structures with diverse appearances and remarkable properties. They have captivated humans for centuries, both scientifically and aesthetically, and continue to be utilized in numerous fields due to their unique characteristics.