Hello, colorful! This impression jasper strand features a rainbow mix of beads. Perfect for fun and bold one-of-a-kind designs. Mardi Gras Mixed Impression Jasper is formed from the combination of dyed impression jasper and pyrite. The factory combines these materials using significant pressure and heat. Once formed, the stone is stable and colorfast. The colors are bold & beautiful and the inclusion of natural pyrite gives the stones a nice texture and depth.