Mona lisa is the world most expensive painting is the world

Source: @pixabay
This painting have highest insurance value. Insurance values of this painting is $100 million in December 1962.

And its isurance values in 2016 is $620 million.

So why this painting is so costly. So cause is its affects.

When see mona lisa it give us double effect.

When see this painting in happy mode mona lisa also looking happy.

And when we see mona lisa in unhappy mode mona is also gives us unhappy smile .

This is the only one effect of his cost.

Thank you.