Beautiful, gently pre-loved. Base Material: Non-precious lead-free premium alloy with .05% silver, which is strong and lightweight. Overlay/Finish/ Electronic Plate: Rhodium and 14Kt gold, a permanent non-tarnish, easy to care for finish. Rhodium, a derivative of platinum, has all the platinum attributes with the added benefit of being harder, lasting longer, and a whiter tone. Stones: Our product stones are Cubic Zirconium. Even when diamonds' glitter is undeniably gorgeous, high-quality stones are expensive, and many women turn to cubic zirconia (also known as CZ) as an affordable substitute. Human-made Cubic Zirconium will not chip, crack, cloud, or fade. Cubic Zirconium is virtually indistinguishable to the eye by diamond experts, can scratch glass like natural diamonds, and is tougher than a sapphire. Earring Posts: Surgical steel, which is ideal for sensitive ears prone to infection or allergies. John Medeiros Jewelry Key Attributes. 1. All designs are original. 2. Hand made in the United States with intricate, hand-carved detailing on the front, sides, and back. 3. Advanced product engineering and solid construction for durability. A. Original closures, some hidden, which blend into the overall design motif. B. Multiple strands are frequently used on bracelets and necklaces. C. Chains and ends are joined in the casting process. D. Cubic Zirconium stones are prong-set, not glued.