Here is a break-down of the metals that we use and how you can easily identify them on the metal selection menu when applicable.Silver Plated: Is made of brass metal with silver plating.Gold Plated: is made of brass metal with 14K gold plating.Sterling Silver: is made of 925 silver metal.14K Gold over Sterling Silver: is made of 925 silver metal with 14K gold plating.Two-Tone. Sterling Silver: is made of 925 silver metal with 14K gold plating and the name in silver.10K Gold: is made of 10K solid gold metal.14K Gold: is made of 14K solid gold metal.