What type of rock is this? Anyone?
I'm pretty sure this is agate. To be sure, try to scratch it with a nail. If nothing happens to the rock, then it is indeed agate.
This is a popular rock here, and you can read some more information about it by looking up previous questions asking about agate.
That is jasper which is a form of chalcedony which is composed of microcrystalline quartz. That is quartz only seen through a microscope. If the sample was agate it would be cloudy but translucent but it appears to be opeque. This mineral has some quartz in the middle part.