Collocations for precious - adj.

be
become
seem
The people in his life seemed so precious to him now.

extremely, very
incredibly, infinitely

to
You are infinitely precious to me.

Precious is used with these nouns:
antique, asset, cargo, commodity, gem, gift, heirloom, heritage, jewel, memento, memory, metal, minute, moment, possession, relic, resource, second, stone, time, treasure