This could be Utah Red Grape Agate. (See my blog, "The Grapes of Sandra Fell"). Some of the agate found in that same area doesn't actually have the red agate botryoidal grapes but it does have the red banding. But, honestly, I really don't know. The last thing I want is to misidentify a rock. I'm 99 44/100 percent sure that my dad collected it somewhere in the south east Utah desert.
 
It's just the right size for a rock saw. You can slice it like cold cuts for lapidary work. But you might not want to do that because the distinct red banding can be seen across the room.
 
If you're interested in more rocks, you can save a few dollars by combining several items into the same custom order.  There will be just one shipping charge in a cost-effective USPS flat rate padded envelope. Send a message before ordering so we can set up the order. I do a lot of my business through custom orders and I love to work with people to get just the right rocks you're looking for.