Origin of Gold

Gold is usually related with wealth because is a heavy rare metal and gold color is magnetic to human eye.

But, if you think about the origin of gold you will be amazed and will never look again in the same way to your gold ring or to your gold necklace.

So, where gold came from?
The answer is from a Supernova, which means from the collapse and explosion of a dying star.

Before our Sun, there was a bigger star in this space area that eventually died and exploded generating almost all elements that you can find in our solar system and specifically in our planet.

Gold is created in the heat of the explosion of a star core during a Supernova event, where iron of the star core is converted to gold due to the fusion of iron, generating heavier elements than iron, elements as gold or platine.


Source: Into the Universe with Stephen Hawking

20 million tons of gold in the ocean

There is a lot of gold in the ocean and it is possible to extract gold from seawater.

However, currently there isn’t a cost-effective way to mine or extract gold from the ocean and make a profit from it.

Why?
Because as you know, the oceans are huge, and the actual concentration of gold in seawater is only about 0.0000000006%. To put it another way, there is between 0.1 and 2.0 mg per ton, depending on location, which means that with current technology is more expensive to extract than the value of the gold extracted itself.

More info in this link.