Depends what access to chemicals you have. You need PEA, Citronellol and Geraniol. Ionones, and damascones. Then if you can get it a material called Rosalva. Also Rosascene. Can't remember who males these, but they have the metallic note you are after. Green metallic means Triplal, or iso Cyclocitral. That is just for starters, and off my head. No doubt others will suggest more; eh Chris?