Valuable

Your watch seems to be very valuable.

The gold coin was much more valuable than was supposed.

A valuable object decreases in value if it is damaged.

Can you spare me a few minutes of your valuable time?

Of course, to be valuable, an old carpet must be in good condition.

Chris could not conceal his sadness when he heard that Beth had been unable to find his valuable watch.

We can get a lot of valuable information from the book.

So valuable were the books that they were handled with the greatest care.

Jack broke his mother's valuable vase, but he didn't do it on purpose, so she wasn't angry.

This reference is valuable for my research.