Types of wire
Silver filled wire (standard)
Silver wire with a very thin wire of copper inside, the quality of Silver is 99,9%
Sterling Silver 925
This wire is made of Sterling Silver (925)
This wire is made out of copper and zinc.
100% copper with a tarnish resistant layer that will avoids corrosion.
Gold filled wire
Gold wire with a very thin wire of brass inside, the quality of gold is 12 or 14 karate.