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Tourmaline
SKU: 0513G8128
3.4 x 7.3 x 3.4 cm
Erongo Mountains, Namibia
Price: $75.00 (USD)
A wonderful example of tourmaline's hemimorphism with one end of this doubly-terminated crystal exhibiting first and second order trigonal pyramidal faces and the other splintery-looking with basally terminated prisms, and a distinct three-fold set of "fins" of parallel grown prisms.
Ex-Martin Zinn Collection