14/20 Gold Filled Jump Rings. A fantastic wire to make chain maille pieces, works similar to sterling silver feels.
The 14/20 indicates that the gold is 14kt at 1/20th the weight of the wire. Gold filled wire when treated correctly can last many, many years.
Cleaning Gold Filled Rings
Gold filled rings will not tarnish however can get dirty. There are several methods to clean off the dirt and grime as long as you take care not to use anything that will scratch.
You can use a silver cleaning cloth or use a non abrasive toothpaste with gentle application using a soft bristle toothbrush. Once cleaned and completely dried, keep it as air tight as possible to keep the shine.