This cleansing stone is said to clear negative energies, and can be used to reprogram other stones. It is a stone of mental clarity, and improves one's connection with the divine. Selenite can be used for scrying into the past, present and future.
This is satin spar selenite.
Please note - due to the soft nature of selenite, the pyramid tip may be more rounded than sharp. The pyramid will it be exactly as shown.