Brecciated Jasper!

The rock in the image appears to be Jasper, specifically a variety that's often called "Picture Jasper" or "Landscape Jasper" due to its interesting patterns.
Here's why:
* Appearance: The rock exhibits a wide range of earthy tones – yellows, browns, grays, and whites – swirled and banded together. This is characteristic of jasper.
* Opacity: Jasper is typically an opaque rock, and the image shows that light doesn't transmit through it.
* Texture: While we can't feel the texture from the image, jasper is usually fine-grained and smooth.
* Patterns: The distinctive dendritic (branching) patterns and flow-like swirls are common in Picture Jasper. These patterns are often formed by mineral inclusions, such as iron oxides, during the rock's formation.
Picture Jasper is a type of chalcedony (a microcrystalline quartz) that is known for its unique and often beautiful patterns. It's a popular material for cabochons, carvings, and jewelry.
It's important to note: Identification based on an image alone isn't always definitive. A closer examination in person, including hardness tests and potentially looking at a fresh broken surface, would provide more certainty. However, Jasper, particularly Picture Jasper, is a very likely and accurate identification based on the visual evidence.