Colour is the most important atribute of an emerald. Fine colour will be expensive, even if it small and included. The colour of your stone isn''t desirable (muddy) and very uneven (bands of colour). If the bands formed an attractive picture, it could have some value as a novelty stone.
Your stone is also opaque, instant of transparent or, at the most, translucent. This also destroys value.
That''s just fine with me. This probably sounds crazy, but I don''t actually want it to be worth a whole lot, because it''s going into a piece of jewlery that I''m making, and I have set prices for what I make...if I accidentally put an expensive stone into a necklace or something and sold it for $10, the only thing that would bother me about that would be that the stone should have been set into something more...elegant looking...as in brought to a jewler''s to have it set correctly so there would be any damage. Thanks!