Besides silver and gold, many other materials are used in jewellery making today. Copper jewellery in particular is becoming all the more popular. This is related to the rising costs of gold and silver, making both of these metals difficult for the casual jeweller to afford. Copper and brass unfortunately tarnish very fast which means that jewellery pieces have to be cleaned regularly to remain shiny. However, if you like the old, tarnished look of oxidised metal this isn't a drawback at all but rather a feature unique to these metals. Other popular materials for use in jewellery include resin, wood, plastic, material, etc. The list is really as long as your imagination can make it.