Most agate can help reduce sensitivity to the weather and environmental pollutants. It can also help attract abundance and wealth and is an excellent stone to help recover after an illness. Resonates with the heart chakra, zodiac sign of Gemini and has a vibrational number 7.
Crystal Skulls help to open up your upper chakras and connect you with your spirit guides and guardian angels. They are used in meditation and you can visualize, while holding the skull, that the guidance and answers coming to you from the spiritual realm are entering or channeling through the skull to you. When they are in pairs or more, they will amplify the energies of one another, similar to how humans interact when they are having conversations and feeding off one another’s ideas and energy. Of course you can have only one, it’s just added and intensified energy if you have more than one.