Searching for evergreen topaz

[ilawacker]

I''m trying to find something similar to this ring. It doesn''t necessarily have to be topaz; it can be a stone with a similar color. I fell in love with this stone and setting, and cannot find it anywhere, including eBay. I would also like to know if it is found in nature or not. If not, I don''t care, it''s still beautiful. PLEASE HELP!