Material: 

The special brass candle holder is made of solid brass. It has not been given any chemical coating which means that it will patinate over a period of time due to the oxidation process.

Oxidation is a chemical process that will slowly begin as soon as the product comes in contact with oxygen. Therefore, the candle holder will begin to patinate as soon as you unpack the product.

If you prefer their brass product to stay shiny you can easily remove oxidation by following the cleaning guide inside the packaging: https://stoffnagel.com/maintenance/