Utah Wonderstone Huge Matching Earring Slab Bead Pair 21x35mm
The Wonderstone Quarry/Mine is a few miles south of Vernon, Utah. The Vernon Hills wonderstone is a welded-vitric tuff (vitric means glassy) of rhyolitic composition. It is a volcanic rock composed predominantly of volcanic glass particles which have been welded or stuck together by heat and compacted by the weight of overlying material. Alteration of the rock by circulating ground water produced the colorful banding. The maroon and yellow-brown colors are due to the presence of iron oxides.
