My first find... and as a newbie I am puzzled...

[BigWave]

Still curious why its ferromagnetic in places that would also lower its SG.

 

[B5MECH]

It looks like excess material from a blacksmith pour so if it was poured into the ground in a rush it would soak up some iron into it, thats my thought any way, could be rusty contamination from just being in the ground.

 

[Golden Ant]

Mount it in a glass case and just tell everyone it's your first gold nugget anyway

That or it will be worked on to have the shape of a little gold bar

 

[treasureman]

The colour is intriguing