help with this rock ....Pics ADDED

[z.daniel88]

heavy non-magnetic and slightly gold and green tinted ...not soft and wont scrape with a knife. any ideas...found 5 in 1 pan with some gold and silver.

 

[Charlie P. (NY)]

Bravoite? Substitute the Iron molecules of Pyrite with Nickel and you gen a non-magnetic form of pyrite.