These earrings are so gorgeous on, they demand your attention! One of the screw backs is marked 9k, the other ( not quite a match ), is marked with an indiscernible mark but it is 9k as well. The earrings themselves have been tested and guaranteed to be sterling silver but they are not marked. They measure almost 2 3/4 inches long and 1 inch wide at their widest. Some of the pastes have darkened with time and some have been replaced including one of the large round ones. The screw backs are old replacements, these can be changed to pierced.