Each blank is one of a kind.   
Raw copper blank to create your own metal set jewelry.
Patina is on both sides of the blank.
*** It's important to know *****
These copper charms are covered with enamel. The layer of hot enamel is durable and adheres well to metal.
These beads can be used to embellish your jewelry. The blanks must not be bent, swamped, sawn, drilled, heated,
or subjected to other mechanical influences. Silver, hot enamel, and patina coatings may chip or peel off.
Keep the beads from falling.
Metal - raw copper
Size -  40x25 mm ( 1.6"x1")
I made the photo on my workbench on my mobile phone. So, you can see the real colors of the patina!
The colors of the patina are natural, all processes no harsh chemicals are used.  
A thin layer of lacquer covers the brass/copper sheet to save the natural color of the patina.