There are many types of jasper; it is one of the oldest known gemstones. It is mentioned in the Bible several times. All jaspers are strong securing, stability stones. It is a powerful protection against things that are not good for you and it eases emotional stresses, making it a wonderful gemstone to have in your home.
Shell Jasper is often used for protection and grounding. It rejuvenates and strengthens.
As a black and white stone, it is also used for balance - bringing relaxation, well-being and serenity. Also called Shell Marble, Shell Obsidian or Marbled Shell Jasper.