Love the lighting and the translucent look of the objects in this one, not quite see-through, but that kinda fuzzy translucence that you find in frosted stuff, where you can see the light coming through it, but not any details.
it really takes a long time depending on the complexity of your scene. When I do it on 2-D it might take me 5 hours or so while on 3-D it takes me a day or more. But of course it varies depending on the artist, as for me (a noob) it takes a long while. hehe!