I make these into a necklace by themselves or add them for embellishment elsewhere.
Here's the specification sizes for these wings . They are inches 2 7/8 (72mm) by 1/2 inches (15mm). They are raw brass and are ready for a patina or paint. They will oxidize over a period of time, but brush up to bright golden color if you use a steel wool (size 0000) pad on them.