Next time, try to set the jpeg quality a bit higher. You have a lot of artifacts.
about the image itself. Good start in blender. To make it more emerald-ish you could make it transparant by lowering the “Alpha” value in the material buttons and pushing the “Ztransp” button in the same place.
didnt come out quite as i wanted(guess thats what i get for spending 5 minutes on it…)
considering our differing experience levels with blender, i’s have to say you got more out of your experience. (all my first renders were simple attempts at metal spheres…)