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What type of rock is this? Anyone?

enter image description here

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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.

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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.

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