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Gold is recycled and melted down from older jewelery. Infact, 20% of the gold in the marketplace today is recycled. This is a GOOD thing for the environment because the gold mined to produce 1 small pair of gold earrings leaves behind 20 TONS of mine waste. And the mercury and cyanide that is used by mining companies to retrieve the gold from rock gets into water supplies, lakes, rivers and streams.