This necklace is made from a geode orb that has been plated with rainbow titanium. The surface of the stone shines with green, blue, purple and yellow colors. Some of the orbs have a geode druzy on one of the sides. The stone hangs from a silver plated chain. The necklace is 18inches. If you would like a different length you can select to customize the product or you can send me a message with your preference.