This fun pop of color is enameled copper with bronze prong setting and 10K earwires.  

These earrings are fantastically lightweight and hang from gold-plated earring wires.

Vitreous enamel, bronze, and gold-plated earring wires

The body of these earrings are roughly 1.25” from top to bottom, and about 0.75"” at their widest part