Banded Agate and Sterling Silver Earrings. Beautiful red colored and white Banded Agate stones set in Sterling Silver make a gorgeous pair of earrings that stand out on the ears. These bold earrings also have a beautiful Southwestern-style design etched into the silver. These will make a great piece for your jewelry collection and can be dressed up or down. Earrings are stamped on the back with 925 (sterling) and Guad-Mex denoting the countries of craft.