Pure Silver, a precious and malleable metal, is usually alloyed with copper to enhance its durability and prevent damage to the metal. Typically, sterling silver consists of 92.5 percent silver and 7.5 percent copper.
Tarnishing & Oxidation :
Tarnish is a brown discoloration caused by air pollution, cigarette smoke, some foods, furnace fumes, etc. Egg yolks, mustard, table salt, vinegar, olives, salad dressing, perspiration, rubber floor coverings, rubber bands and sulphur in some household synthetic detergents can also tarnish or affect silver. Latex paints may contain rubber and will tarnish silver.
Over time oxidation reactions will occur, especially with sulphur and oxygen, causing silver to become tarnished. Care should be taken to prevent this tarnishing.
To avoid this tarnishing, try to avoid the following:
- Applying hair colours or permanent solutions while wearing your jewellery
- Showering or swimming with your jewellery on
- Body lotions, hair spray, suntan lotions, or oils of any kind on your jewellery
- Physical Activities (Sweat) e.g. keeping jewellery on whilst at the Gym