The silver zodiac necklace pendant is rhodium plated brass. The silver chain is sterling silver. The gold zodiac necklace pendant is gold plated brass. The gold chain is gold filled. The rose gold zodiac necklace pendant is rose gold plated brass. The rose gold chain is rose gold filled. The pendant size: Gemini : 9.0mm x 8.0mm Please take your jewelry off before showering or working out. Exposure to salt from sweat can cause your pieces to become dull. Be mindful that perfume, hairspray and lotions may tarnish your gold filled jewelry due to the harsh chemicals. Gently wipe your gold filled piece with a jewelry polishing cloth to clean and shine. Gemini Necklace, Zodiac Necklace, Rose Gold Chain, Zodiac Necklaces, Chain Ring, Gold Filled Jewelry, Polish Jewelry, The Rose, Bar Necklace