It's one of question which differs from person to person. How do you define richness?
If someone is financially stable and does not lack any thing that can be acquire with money such a person I termed as a rich, though some people may be rich in other areas too but my impression of being rich has to do with the person ability to use money at their disposal to get whatever they want and my own country rich people who have money earn a lot of respect and more popular than people who might be rich with knowledge, being rich in term of money superceded any other form or type of richness, if you are rich in term money you can use it to acquire knowledge therefore the best type of richness is having abundant money.