QUARTZ (IRIDESCENT or IRIS),Ojo de Laguna, Chihuahua, Mexico. QUARTZ (IRIDESCENT or IRIS) agate slice. Published specimen.Ojo de Laguna, Chihuahua, Mexico.Measures 2-3/8x2x1/16 inches. A breathtakingly beautiful specimen when viewed with a single, incandescent light source, sunlight or even a candle. It is illustrated in The Beauty of Banded Agates by Michael Carlson, on page 16.Aside from two other specimens that I saw (but could not buy) many years ago, this is the finest example of iris agate that I know of. Possibly the finest example known.
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