"Valuable" itself is an adjective derived from the noun "value".
If you are looking for a suffix that conveys value or worth, you might consider:
* -able: This suffix can indicate something that is capable of being done or something that is suitable for a certain purpose. For example, "usable" or "readable."
* -ful: This suffix often indicates fullness or abundance, but it can also be used to convey value or worth. For example, "helpful" or "meaningful."
* -worthy: This suffix indicates that something is deserving of a particular action or quality. For example, "noteworthy" or "trustworthy."
It is important to note that these suffixes do not directly translate to "valuable" but can help to convey similar meanings in different contexts.