to the earlobes has been to pierce holes in the lobes, through which a loop or post may be passed. But a variety of other devices have also been used, including spring clips, tensioning devices such as screw backs, and, for particularly heavy earrings, loops passing over the top of the ear or attaching to the hair or headdress.Characteristic Byzantine earrings were plain gold hoops with multiple pearl pendants hung on chains, and crescent-shaped
were fairly light in weight, owing to lightweight settings of gold cannetille or of repoussé (embossed relief raised from behind with a hammer), which had largely replaced cannetille by the 1840s. Earrings with long, torpedo-shaped drops of carved gemstones with applied gold filigree were also popular, many with detachable drops to allow the tops to be worn alone.Small single-stone and
, made of diamonds and platinum contrasted with strongly colored materials such as onyx and lapis lazuli, were displayed at the Exposition International des Arts Décoratifs in 1925, and this style, which became known as Art Deco, remained popular for both precious and costume earrings for the remainder of the decade.