These earrings are printed with an original design of a Old World Swallowtail (Papilio machaon) butterfly wing on sustainably-harvested birch wood veneer. 

They are 3/32" thick, 1 1/4" wide, and 2 3/8" tall without the hook. The hook is antique brass and lead- and nickel-free.

There are variations because of the natural wood grain.