There are a variety of crystals that can be beneficial to sleep with, as they can help to promote relaxation and peace. Some of the best crystals for sleep include: amethyst, lavender quartz, lepidolite, Selenite and sodalite. These crystals can be placed under your pillow or near your bed, and can also be used in crystal grids or elixirs. If you have difficulty sleeping, it is also recommended to consult with a doctor or naturopath to see if there are any underlying health issues that need to be addressed.