Millerite From Halls Gap, Kentucky (Box Included) Collectors Piece, Home Décor 

Weight 25g (Including Box)
Size 2.5cm by 3cm
Thickness 2cm

Millerite is a nickel sulfide mineral, NiS. It is brassy in colour and has an acicular habit, often forming radiating masses and furry aggregates. It can be distinguished from pentlandite by crystal habit, its duller colour, and general lack of association with pyrite or pyrrhotite.