The One Jewelry 925 Sterling Silver Dancing Spark Super Shiny Cross Pendant Necklace 18" (JP0049) Dancing jewelry features a unique setting that allows the stone to move continuously. The "dancing" spark is a revolutionary patented mechanism allowing the center stone to continuously move to create a constant movement and sparkle. The center stone CZ is suspended from two fine points and is designed so that the stone does not touch the body, but continually moves in a vibrating fashion. Free 1mm 18 inch 925 sterling silver BOX Chain and silver polishing cloth Stylish & Great for Everyday Wear!100% Satisfaction Guaranteed!The actual size of the product, please refer to the proportion of the product and the coin in the picture.