Our best-selling crystal element bundles include six of our most popular natural crystals. Each bundle includes the following elements: Amazonite, Amethyst, Black Picasso, Blue Lace Agate, Tiger Eye, and Gray Shell. Amazonite: Used by many to soothe anxiety and boost self-esteem. Amethyst: Revered by many for its calming properties and used to cleanse negative energy and encourage tranquilty. Black Picasso: This gemstone is thought to provide support during stressful times and serve as a calming source. Blue Lace Agate: Blue Lace Agate is admired for its purification properties those who use it have said it helped them find their voice and increase their confidence.