The full moon will charge your crystals. It will amplify the energy of your crystals including any energy that has attached to your crystals, both negative and positive.
Before placing your crystals to charge in the full moon, cleanse them with sage or sound vibration such as a singing bowl or chanting (lam, vam, ram, yam, ham, om, ng). This will return the crystals back to their natural vibration, allowing you to then set a fresh intention that can be amplified by the full moon.
Sending you all peace, focus and perseverance towards your goals.