ulexite, tvstone

Ulexite

Ulexite - the "Television Rock"

The crystalline structure of the ulexit leads to a special phenomenon. If the stone is cut transversely to the fibers and then polished and put over a text or a picture, both are projected to the surface. This is made possible by the light-conducting transparency of the mineral. This phenomenon gave the name "television stone" or "TV Rock" to the stone.

Origin: California, USA

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