Blue Blue-the colour of the ocean, of sleep, and of twilight. Ruled by the element of Water and the planet Neptune, these are receptive stones and promote peace. Holding a blue stone, or gazing at it by a soft light calms the emotions. If you have difficulty sleeping, try wearing blue stones to bed. This is also excellent for halting nightmares.Blue stones are worn or used to promote healing, in general, andspecifically to reduce fevers, remove ulcers and their causes, and foreliminating inflammations. They are sometimes held to reduce or remove pain from the body.If you feel in need of a purification, wear blue stones, perhaps while bathing, to purify your inner being as well as your outer flesh.This is often done prior to magickal ritual.
[Encyclopedia of Crystal, Gem, and Metal Magic-Scott Cunningham]