MvdT Jewelry is handmade. There might be variations in creations, that makes each single piece unique. The material of the collection is Brass and Sterling 925 Silver: Brass | Messing is an alloy of 63% Copper and 37% Zinc. It is free of Nickel. Brass and Silver has an organic feeling. These metals breathe and oxidize over time. This gives each design a raw and vintage touch. It’s pure…just the way life is supposed to be. Polish it, you and the gold or silver will shine.