Gold-filled metal is next level. Gold-filled materials are an excellent alternative to solid gold, offering gold's characteristic warm yellow or blushing rose tones at a fraction of the cost. At the same time, gold-filled is more durable and retains more value than gold-plated pieces. Gold-filled jewelry will not turn your skin green, will not tarnish and can last up to 30+ years, because it is real gold. So, no more worrying about getting your jewelry wet, sweaty or hitting it with perfume. 

Diagram showing the difference between solid gold, gold-filled and gold-plated