Tower Blue Agate with bands and a window druzy goatmilk soap Horizontal stripes white and purple

Horizontal stripes white and purple one this zebra bromeliad

Florida @ Orender Farm & Gardens

It's common to have white inclusions of Calcite within this crystal

resulting in colourful bands and patterns

While moss agate isn't strictly an agate because it's not banded

Tower Blue Agate with bands and a window druzy goatmilk soap Horizontal stripes white and purpleBlue Agate with bands , window druzy. Agate. Agate t is a rock consisting primarily of cryptocrystalline silica, chiefly chalcedony, alternating with microgranular quartz. Agate is a translucent variety of microcrystalline quartz. It is used as a semiprecious stone when it is of desirable quality and color. Agate generally forms by the deposition of silica from groundwater in the cavities of igneous rocks. These structures produce the banded patterns