These are my classic fibonacci hoop earrings - beautiful swirling spirals loop in a circle, reminiscent of the golden ratio. Hand cast in copper, giving them a wonderful fiery gleam, they are soldered to .925 Sterling silver ear wires, which are hypoallergenic and nickel-free! Each side of each earring is beautifully detailed and sculpted. Check out the pictures to see the amazing range of color the copper displays! The complete earring from top to bottom measures approximately 1 and 1/2 inches including the ear wires (38.5Mm) and just under 1 and 1/4 inches wide (30.5Mm). Enjoy a reusable gift box and back stoppers with each pair. I have this design available in white and yellow brass, and the same design but smaller in all three materials as well.