Price listed is for 6 stones. These are Mother-of-Pearl disks that measure about 14mm. They have a single hole drilled in the center that measures approximately 1.5mm. These could possibly be used as buttons, or you could embed a small rhinestone in the hole. As with all natural stones, there will be some variation in size, shape, thickness, and coloring, as well as possible natural flaws. Each piece is unique!