worth one's weight in gold
Also, worth its weight in gold. Very valuable, as in John's been extremely helpful; he's worth his weight in gold, or That tractor's been worth its weight in gold. This metaphoric term dates from Roman times and appeared in English by the early 1300s.
Words nearby worth one's weight in gold
worst-case,
worsted,
wort,
worth,
worth one's salt,
worth one's weight in gold,
worth one's while,
worthful,
worthing,
worthington,
worthless