6mm Genuine Ethiopian Opal Stud Earrings in Oxidized Sterling SilverGenuine 6mm Ethiopian Opal stud earrings bezel set in 925 sterling silver. Completely handmade in my studio using solid sterling silver. I have hand soldered the bezels to the studs and mounted the stones within them. The silver has been oxidized and polished to set off the stones fire and rainbow of colors. These are such pretty earrings. Depending on the lighting they shimmer from blue green to pink to gold. A rainbow of color! Each stone is unique