I've got the Minerals

Galena ( Lead sulphide ) and Pyrite ( Iron sulphide )

Galena is the main ore of lead.
Pyrite is used in the manufacture of sulfuric acid.
Both sulphides are very common.

After some days off blipping, I decided to put a little more effort in to the shot.
Used an extension tube and ring light for this shot, some slight crop and saturation in picasa too.