Our California 357 Magnum Brass Bullet Head Necklace features a genuine recycled bullet head, Swarovski crystal, and a silver plated snake chain. The bullet diameter is 7/16" (11mm).Chain lengths available:16"18"20"22"Crystal colors available:Siam (January)Amethyst (February)Aquamarine (March)Crystal/Clear (April) - ShownEmerald (May)Light Amethyst (June)Ruby (July)Peridot (August)Sapphire (September)Rose (October)Topaz/Topaz (November)Blue Zircon (December)Light PinkLight RedPearlBullet Design, Inc. (“BDI”) products are created from bullets that have been fired, recycled and handcrafted into jewelry. Dimensions are approximate and sizes or colors may vary slightly due to the characteristics of handmade products. Please verify the correct shipping address before making your payment. If we ship your item to an old or invalid address and you are not able to locate the item, we are not responsible for shipping a replacement. Thanks! We appreciate your business!