14k Yellow Gold Simulated Birthstone and Cubic Zirconia Double Heart 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 14k gold, featuring quality simulated sapphire and cubic zirconia stones. Our simulated sapphire has a rich, beautiful color and an unmatched sparkle, so it will easily convince others it's the real thing. The necklace is a thin, delicate and feminine rope chain with a spring ring clasp. The pendant measures 13mm (0.51 in) x 21mm (0.83 in) and weighs 2.2g. The chain measures 0.8mm thick and weighs approximately 0.6g. The necklace comes in 13in, 15in, 16in, 18in, 20in and 22in lengths.