Many people think of black gemstones when they envision onyx gems, but this variety of natural stone also comes in the form of beautiful midnight blue gemstones. Like black onyx, blue onyx gems are often used in reiki, chakra healing and other forms of natural and crystal healing to promote balance, particularly for regulating mood. The blue crystals for healing are also thought by some to give the bearer feelings of peace and tranquility. Our onyx blue tumbled gemstones are all hand selected to ensure that each batch purchased includes smooth, flawless gems. The coloration and shape of each stone will be unique, and the gem stones will vary in size. Sold by weight.