Sea meets sky in these beautifully detailed brass stunners crafted by We Dream in Colour. Sterling silver posts. Nickel and lead free. 3.5" [9 cm] long. --- Made in Essex, Ma Jewelry Care General - Always remove jewelry and/or hair accessories when washing hands, showering, or swimming. Unfriendly chemicals can cause unpredictable reactions, so put jewelry on last after you have applied perfume or hair product. Brass & Copper - the beauty of these metals is that they can develop a rich patina with wear. Exposure to salt air and water will bring on bits of green patina. To restore to a bright finish we highly recommend cleaning with a paste of citric acid (available in the baking/spice section of most grocery stores), a few drops of dishwashing soap and water. Leave on for ~ a minute, brush, rinse, and repeat as necessary for heavier layers of oxidization. Sunshine cloths are also a great and easy way to clean your pieces.