16btrm.r ((OPTICAL SELENITE akd TV ROCK)), $5 MINIMUM BID, Morocco, 6 x 3 x 2 cm, Miniature | |
Original TV rock was Ulexite from Boron with its optical fiber optical property of bringing an image to the upper surface. Optical Selenite which I believe is Satin Spar also has the fiber optical property of bringing an image to the upper surface |