Natural stone with a prayer wheel pattern: crystal and smoky quartz, a set of 2, one of each. What is a prayer wheel? It refers to the Tibetan Buddhist implement "mani wheel (prayer wheel)." Overview: It has a cylindrical tube attached to the end of a rod, and scriptures are stored inside. Effect: Turning the cylinder clockwise is believed to have the same merit (blessing) as reciting the scriptures inside. Types: They range in size from handheld to giant ones installed in temples. Meaning and effects of crystal: Purification: Cleanses the surrounding energy and removes negative energy. Mind: Clears the mind, enhances concentration, and balances the mind and body. Healing: Provides healing and peace with gentle energy. 12mm ⚠️Notes on purchase There are irregularities in the color and shape unique to natural stones. Please understand. * We have photographed the actual product, but the color of the actual product may differ slightly from the photos.