Beautiful simulated diamond pendant on an 18 inch chain diamond moissanite sapphire ruby emerald opal topaz aquamarine amethyst citrine garnet peridot tourmaline spinel onyx pearl freshwater pearl tahitian pearl south sea pearl abalone mother-of-pearl jade turquoise lapis lazuli quartz rose quartz smoky quartz blue lace agate jasper malachite moonstone sunstone obsidian zircon cubic zirconia crystal rhinestone tanzanite alexandrite iolite hematite amber gold rose gold yellow gold white gold green gold black gold gold plated gold filled vermeil brass copper bronze pewter platinum rhodium sterling silver 925 silver 950 platinum palladium titanium stainless steel nickel-free hypoallergenic recycled gold recycled silver electroplated