Green Picture Jasper clouds or hills, cabochon slab, 5 mm

This is a nice piece of picture jasper showing green billowing clouds or hills. Its maximum dimensions are about 7x7.5 cm, and it is 5mm thick. It has some lettering on it, of which I can only discern "jasper" and "cc." One of the pictures (the darker one) shows the specimen wet, to better show its color and pattern. It was part of the estate of lapidarist hobbyist, and probably dates back about 30 years or more.