Selenite Tumbled Stones:

Selenite is said to be a powerful healing crystal that promotes peace and calm, mental clarity, and well-being. It's also believed by some that this crystal can remove negative energy and help you connect to higher realms

Selenite provides calming and angelic energy to stabilize emotions. It assists in connecting with your light body or soul, as well as connecting with the angelic and spiritual realms. It induces clarity of mind and accesses angelic consciousness. It anchors the light body in the Earth vibration. 

size 2-3cm - size & shape varies due to Mother Nature :)