This cross is beautiful. Swarovski Crystal is made with a Jewelers Brass, it is either plated with Rhodium-from the Platinum family or with 14KT Gold. The Aurora Borealis Crystal is a pinky-blue that shimmers and actually matches most anything you wear as it picks up the colors you have on. You can have any length of chain 16", 18", 20", 24", 30" or 36". Please just email us what you would like.