Large Picture Jasper Crystal Tower 15.5cm Last Chance but it is thought that but it is thought that Undulatory Extinction occurred during the metamorphism process of the rock and this facilitated the unique composition and structure of the stone that lends it well to the Rayleigh Scattering effect of light scattering (which is thought to be behind the observable blue colour of the Quartz) Banded Agate has a powerful connection to the Root Chakra (Base Chakra): it is said to help people remain grounded in reality when striving to reach their high hopes and dreams Product Reference Number: 17682 (the range of brown tones in Picture Jasper is caused by high iron content)