Clayvision Basketball (Flat Back) Charm Necklace w/4mm Rose Colored Swarovski Crystal Pink October Clayvision original design. The charm measures about 1/2" tall. The link chain necklace measures 18 inches and includes a 4mm genuine Austrian Swarovski crystal. The pewter charm is nickel plated and manufactured in the United States. Not recommended for children under 3 years of age or for pets.