Each blank is one of a kind with unique patina colors and textures. 
Raw brass blank to create your own metal set jewelry (necklace, earring, etc.,)
Patina is on both sides of the blank.
Metal - raw brass
Size - 35x20 mm (1.35"x0.75")
 
I made the photo on my workbench on my mobile phone and the pictures have not been enhanced. So, you can see the natural colors of the patina!
You can add a layer of lacquer to protect the finish further. 
The colors of the patina are natural, and all processes have no harsh chemicals used.