Youngite Agate is a fluorescent agatized limestone breccia and can be found in ultra violet or black light displays at many museums with other fluorescent rocks and minerals. This chalcedony stone, drusy quartz, glows green under Ultra Violet (UV) or black light. The jasper center of this material is called brecciated due to its angular fragmentation. The jasper center varies in color from a light tan, to a pretty peach, brown, reddish, salmon and variations of these colors. Youngite is the state stone of Wyoming, a brecciated chalcedony, where creamy and red jasper has been broken up and agate has filled in the cracks. This chalcedony and quartz usually also form around the exterior and lines the vugs of the material. It comes from one location only and is no longer mined, making this rare.

Please enlarge and view the photographs for more detailed views. Shown wet to simulate polish. As with all natural rock, there may be fractures or pits to seal or work around. Each slab has the approximate dimensions listed. I use the longest and widest point and the thinnest, it’s not averaged.

We have worked hard with the lighting and the settings on the camera so that the colors are very accurate. Individual settings may affect color viewing on various devices and I cannot predict what your device will do, but on my Macbook Pro, they’re dead on for color. I appreciate your business!

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