Regular earrings studs backs are made of silver plated metal, this is a standard in the industry, but it could lead to adverse skin reactions on sensitive people. This solid sterling silver backs are made of genuine 925 sterling silver, and will prevent this problem.
Price is for the pair.
If you don't know the size of your ring or you want to measure your finger to find your ring size, just download and print this PDF document. Be sure to print the size tool at 100% scale (no reduction, no page fit) and follow the instructions in the chart.