These beautiful pendulums are hand made with Swarovski crystals. I incorporate semi-precious stones in every one of them according to the color of choice. The chain and findings are made of base metal. There are 10 colors to choose from, clear, AB clear, pink, sapphire, amethyst, antique green (more of a teal color), dark topaz, topaz, garnet, and peridot. If you have any questions as to how to use one, I suggest you buy the book, "Pendulum Magic for Beginners" : "Tap into Your Inner Wisdom", by Richard Webster. This is a spiritual tool but may also be used as a sun-catcher or however else you choose to use it.