Selenite Disks are a stone of mental clarity. It can enhance mental flexibility as well as enabling stronger decision making, it can cleanse your other crystals and also your space of unwanted vibes and energies. Perfect to display jewellery on or can be used as a powerful charging station or for crystal grid layouts (2nd pic if for an example). It is also used for connecting and communicating with angels and guides. Its stunning to look at too.
Selenite is a very soft stone and can scratch easily