Electrolytic nickel.

 
Electrolytic nickel nodules.

 
Nickel anode

 
Round piece of nickel.

 
Nickel crucibles.

 
Nickel gas bottle (used for storage of liquid chlorine).

 
Nickel spheres.

 
Nickel pellets.

 
Nickel coins (Canadian and Swiss).

 
Nickel floating zone refined crystal.

 
Nickel sponge (some kind of support for catalist).