(Internal # R33-56) This is a genuine Ulexite "T.V. ROCK" specimen, between 1-5/8 and 1-3/4" long. What you see in to photo is what you get.
This is by far the most interesting and popular mineral we sell! "Ulexite" is a natural mineral (NaCaB5O9.8H2o) from a borax mine in Boron, California. Our specimens are straight from the mine so it's all A grade clarity. It is calcium-sodium hydrated borax. It exhibits a unique fiber-optic property - when one polished end is placed on a newspaper or picture, the capillary fibers transmit or project the picture to the top of the rock! This is NOT a transparent stone. Kids just know it's weird and wonderful!
Obtained directly from a borax mine in Boron, CA where we obtained the Ulexite. Colemanite and Kernite are also mined here.
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