Nature means that from the beginning, gold and silver were used as universal equivalents, so money was originally gold and silver. Before the currency came into being, the universal equivalents were not unified, and some tribes began to use gold and silver as universal equivalents, so gold and silver had been used before the currency came into being, so gold and silver were naturally not money.
Gold and silver are natural minerals and natural substances. Money is a trading tool created by human beings. Gold and silver are naturally produced, not for the convenience of human transactions, so nature is not money.
Money, as a tool to facilitate human transactions, requires value preservation, is not easy to deteriorate and is easy to circulate. The chemical composition of gold and silver is stable and not easy to deteriorate. Reserves and current mining methods make its value not suddenly change greatly, so it is of course the most ideal as a currency. So human beings naturally choose money as gold and silver.
"Gold and silver are not money by nature" means that gold and silver were just ordinary commodities when they first appeared on the market. Only when the universal equivalent is fixed on gold and silver can gold and silver become money.
"Money is naturally gold and silver" means that gold and silver are born with the property of acting as money. It has the advantages of small size, great value, portability, long-term preservation, uniform texture and easy division.
Gold and silver are naturally produced, not for the convenience of human transactions, so nature is not money. As a trading tool created by human beings, money is a reactant of gold and silver, which has the characteristics of preserving value, not deteriorating and being easy to circulate.
The chemical composition of gold and silver is stable and not easy to deteriorate. Reserves and current mining methods make its value not suddenly change greatly. As a currency, it is of course the most ideal. So human beings naturally choose money as gold and silver.
Extended data:
"Gold and silver are naturally not money, and money is naturally gold and silver." From Marx's demonstration of precious metals in Critique of Political Economy.
Nature does not produce money, just as nature does not produce bankers or exchange rates. However, because bourgeois production must concretize wealth into a fetishism in the form of a unique thing, gold and silver have become the corresponding incarnations of this wealth.
Gold and silver are not money, but money is gold and silver. On the one hand, the crystallization of silver or gold currency is not only the product of the circulation process, but also the only product left by the circulation process.
On the other hand, gold and silver are ready-made natural products. They are directly the former and the latter, and there is no difference in appearance.