This is a lovely pair of late 19th, early 20th century black French Jet earrings. French Jet is faceted black glass and was a durable substitute for Whitby Jet, and both were often used in mourning jewelry. The 14K gold posts are threaded, and the clutches screw on securely. One of the clutch backings is original, the other is new, as one was missing when these earrings were purchased. These measure a bit less than 1/2" in diameter.