Quantum physics shows that every small particle in this universe can be in the form of energy. Everything is made out of those particles. So everything in the universe vibrates at different energy levels.
Our bodies have different energy centers called chakras. These centers have their collections of neurons which create a memory in these centers.
If we have suppressed emotions in these centers, it can create some issues.
Crystals are supposed to have some high energies which are believed to heal us emotionally and physically.
Also, a crystal altar will create a different vibe inside you, which will help you amplify the power of your thoughts, prayers, intentions, and meditations.