Alien Egg!

The rock in this image appears to be somewhat translucent with a mix of colors, predominantly orange with white and brownish patches. This could indicate a few possibilities:

Chalcedony or Agate: Given its translucent nature and coloration, it might be a form of chalcedony or agate. Agates are known for their banding or layers, but not all agates show clear banding. The coloration could be due to iron oxide inclusions.
Jasper: If it's not as translucent and has a more opaque appearance, it might be jasper, which comes in various colors and often has a waxy luster. Jasper can also have iron inclusions giving it the orange hue.
Opal: Some common opal or opalite can look similar with its play of colors, though true opal would typically show more of a fire or opalescence.
Quartzite: If the rock has been metamorphosed, it could be quartzite with iron staining. Quartzite comes from sandstone and can have a variety of colors based on impurities.