What a pretty ring! (though it's too big for me). Thanks for sharing.
the asha and winfields emerald cuts and asschers extremely realistic, i think.
here's a link to an emerald cut ring review: http://betterthandiamond.com/discussion/ubbthreads.php/ubb/showflat/Number/397967#Post397967
i owned this 9mm (3ct) winfields asscher cut briefly. i found that i didn't like step cuts as much as i thought i did, well...asschers anyway. i haven't tried an emerald cut yet.