Victorian Era 12K Gold-filled (acid test) Pierced Turquoise Earrings. Persian turquoise and gold-filled earrings from early 1900, 1890 through 1920, were likely screw-back earrings that have been converted to pierced. Shaped like a pendulum to swing from the ear when the wearer moves. Two Persian turquoise stones in each earring. In good estate condition with wear indicative of age. Approximate measurements are 1 1/2 inches long by 3/8 inches wide. Unusual and pretty earrings that can be worn with any attire.