Purple Opal Morado Cut Polished RockBeautiful cut polished Morado Purple Opal rock specimen. This specimen is considered by metaphysical practitioners as a stone of enhancement. There are a few theories about opal formation, but we will use the most widely accepted theory. Groundwater that sits close to the surface evaporates as the seasons change, allowing a very thin layer of opal to form in the pores and cracks within the rock. Opal develops inside these cracks near the surface over