Although a little bashed about, this clear (slightly smoky) quartz is a natural transmitter-channeller formation: it may even have been a Dow, before suffering damage to one of the corners of a face! Don't write off its base either, for this has self-healed across a fracture plane, and close examination shows it in fact to be a DT, with many elestiated faces clearly visible amongst the areas of fracturing.
Size: 7.75 x 3 x 3.5 cm