Bright Aluminum is light weight, easy to work with, bright and shiny and clean for an aluminum product. It does oxidize with oxygen and can leave a grey rub off on your skin or clothing. This can be removed with soap and water, or rings can be tumbled to regain the bright shine. We recommend this material for beginners because it is easy to work with and inexpensive. If you want a material that doesn't oxidize you can choose the silver Anodized Aluminum which has been sealed in the anodizing process not to leave a rub off.