I love the Earth one - I normally don't get to say that about elemental art (since Earth is often the "boring" one) but that one is cool! the fire one still looks a little dull, the brown colour being a luminois red would help seperate it further from Earth in terms of colour, and I may have put something in the air one (like, a cloud if you can do volumetric materials) but overall they look nice and would make great marbles
Stupendous. Splendid work; I like how the elements are here represented as something small, marbles. Though I'm wondering what happened to the fifth element. Is it perhaps the light that is catst on the marbles?