Burnished Patina of Copper for Jewelry

I am looking forward to working these into a bracelet...  I love the burnished, antique, patina of these copper buttons.  

Personally I prefer brass and copper to gold, but my all time favorite is silver.

These buttons are 5/8" and will lay nice and flat for a bracelet or necklace....  will have to set up a tray....  I believe I have some turquoise and some copper swarovski crystals so it should work up real pretty?