This quartz crystal was part of our teaching collection. Although a bit bashed about, I bought it because of the large number of fat (broken off) penetration crystals to be found all down two of the sides. There are also a few keys and an empty bridge - although most of the keys are quite literally in the door with this one! The wedge-shaped termination is reasonable, and the crystal is quite wide - almost a Tabby.
Size: 11 x 5.25 x 3.5 cm