This listing is for a Silver Filigree Bullet Ring with your choice of color, casing and swarovski crystal. It is fully adjustable and lightweight. Available in silver tone (as shown) or antiqued brass tone. Select either 9mm brass casing or .40 caliber silver/nickel casing. (silver tone ring & silver casing is shown in pictures) Multiple swarovski colors to choose from, including: Siam - January Amethyst - February Aquamarine - March Crystal/Clear – April (Shown) Emerald - May Light Amethyst - June Ruby - July Peridot - August Sapphire - September Rose - October Topaz - November Blue Zircon - December Fuchsia Light Siam (light red) Gray Smoke If you do not see a swarovski stone color you desire, please send us a message, we will see what we can do!