OOOOO, beetle wings!!! I love those. I wove a shawl in hand dyed chenille and sewed a fringe of beetle wings on it. It sounds like a gentle rain when I wear it because the wings gently clack against each other. I'll try to remember to post a photo when I get home.
People love the "dangles" until I tell them what they are, and then they're all, "EW GROSS." It's not like I pulled the wings off the beetles. The lady I bought them from also had the complete beetle plated in gold, with a pin finding on its thorax. That grossed me out. Your earrings are lovely.
The beetle wings used to be used for the those fabrics that they now sew little mirrors on called shisha embroidery. The beetle wings look like emeralds when used instead of the mirrors. The wings are also very light weight. The mirrors, even though they are small, are heavy and add a lot of weight to the fabric.