Sterling Silver Rhodium Plated Simulated Blue Oval Sapphire and Cubic Zirconia Halo Pendant Necklace Unsure what length chain to buy? 18 inches is the standard length and will look great on most people. To purchase the pendant by itself (without a chain), choose the "0.0 inches" length This pendant and necklace are made of solid rhodium plated sterling silver, featuring high quality simulated sapphire and cubic zirconia stones. Our cubic zirconia is bright and clear with an unmatched sparkle, so it will easily convince others it's the real thing. Pendant measures 28mm (1.1 in) x 12mm (0.47 in). Necklace comes in 16, 18, 20, 24, 30 or 36 inch lengths.