Parable of the Pearl of Great Value

One day, Jesus was out walking with his friends. He told them:

“The Kingdom of God is like a shop owner in search of fine pearls, who, on finding one pearl of great value, went and sold all they had so they could buy it.

Matthew 13:45

I wonder…

I wonder what made this one pearl more valuable than the others?
I wonder if the person was happy with the pearl?
I wonder why the seller was willing to give up something so precious?
I wonder what could be so precious that a person would exchange everything for it?