Sandstone arch, large Arizona Sierra Feldspar The signature zoning of the

The signature zoning of the Hidden Forest Pocket is a thick outer layer of vibrant green with an inky lavender-purple core

The color zoning reacts to UV

I was told that the black matrix is goethite

smoky quartz can't expose you to radiation—even if the hyalite turns "radioactive" green under UV light

but it can range into green or a bold contrast of black

Sandstone arch, large Arizona Sierra Feldspar The signature zoning of theLocale: Arizona Approx size and weight variable by piece; dimensions at end These sandstone arches mimic the grand arches of Utahs national parks. They are made of Arizona Sierra sandstone sourced from central Arizona. Sandstone is a sedimentary rock composed of sand compacted and cemented together through geological processes, giving it a grainy texture. Sandstone with distinct layering like this is often called picture stone because the layers