Selenite is my go to for mental clarity and anxiety. It clears out the clouded mind, and has the pure vibration that is essential for mediation. It is one of the most power crystals on earth and holds a special vibration for our modern, fast paced times. Great care should be used around water however, due to the delicate nature of selenite.
This is the perfect way to store your crystal pieces and energetically cleanse them as well. Place bracelets in the bowl over night to recharge and refurbish their properties.