Price listed is for each stone. These are matte blue acrylic stones that measure about 22mm around. They have textured tops with rhinestones set in them. The rhinestones vary in size from about 2.5mm to 3.5mm. Each acrylic stone will have one of each color: amethyst, topaz, peridot, and sapphire. These have flat backs that are slightly recessed in the center.