I just love all kinds of phantom quartz! Phantoms are caused by a layer of dust or mineral settling on a crystal when it was paused during its growth. Some phantoms are entire crystals inside of a larger crystal!
Phantoms are said to be wonderful for past life work, and in my personal experience they are profound teachers. They help us to experience the knowing that we can be more than we ever dreamed. Understanding that we are always moving forward, it is never "done", and that we can change our minds at any time and reinvent ourselves as we see fit. I have also found them to be very valuable companions for experiencing the times between lifehoods.