Something valuable has considerable monetary or material
value, such as a valuable diamond, or, is of great
importance, use, or service, such as valuable advice,
according to The American Heritage Dictionary of The English Language
(Houghton Mifflin, 1996). Something invaluable
is "of inestimable value; priceless," such as "invaluable
paintings; invaluable help."
So, invaluable appears to have more than monetary
value—it抯 beyond monetary value, although something invaluable
like a famous diamond may also be highly valuable.
Old family pictures are sometimes described as invaluable;
certainly they have no monetary value.
If you are an entrepreneur, you want the most valuable
real estate, the most valuable precious stones, the
most valuable employees and the most valuable
information.
The employees and the information could even be invaluable,
if they are worth so much to you that you would pay almost any price
for them.