Solid Sterling Silver Rhodium Plated Blue Inlay Simulated Opal Round Tree of Life 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 quality simulated opal. Our radiant simulated opal reflects back all the colors of the rainbow, easily convincing others it's the real thing. The necklace is a strong, luxurious-looking cable chain with a spring ring clasp. Pendant measures 28mm (1.1 in) x 25mm (1 in). The approximate weight is 6.3g. Necklace comes in 16, 18, 20, 24, 30 or 36 inch lengths.