My wee orange made in blender of course!

The outside looks highly polished and the inside like plastic. This is probably the kind of oranges that you get served now a days.
The specularity may result from a too high setting in the specularity or sub-optimal lighting. The plastic like look comes from missing structure. If you look at an object this close up the structure must be visible in the texture.

I think it looks great. I suppose you could pull down the spec on the inside a bit. They do sort of look like they are floating just a bit.

Nice orange, but yes it does look a little plastic.

And welcome to the forums!

thanks for the advice guys.