From the classic California pegmatites this is a very different and remarkable tourmaline! The bi color crystal is sharp, glassy has some "cats eye" fibers and a lot of gem clear areas. However what makes this exceptional is the central hole in the center of the termination. This hole is roughly triangular in cross section, like the exterior of the crystal. Furthermore, it is striated on the inside and runs thru more than half of the crystal before it ends at a "negative termination" . The crystal has some very nice color, minimal damage (not eye visible) but the hoppered area is what makes this really impressive. Good for any gem crystal collection or as a conversation piece.