This is a raw and unpolished crystal of rutilated quartz, which is usually found in massive form. The quartz is a very pale smoky, and the rutile is a deep orange-red. There are some very dark smoky phantom layers clearly visible; and there are also many dots of a deep orange material just under the surface of the quartz: this might be iron-, or titanium-based; or be lepidocrocite.
Size: 3.75 x 2.25 x 2 xm