Definitions of valuable:

• noun:   something of value

  Example: "All our valuables were stolen"

• adjective:   having great material or monetary value especially for use or exchange

  Example: "Another human being equally valuable in the sight of God"

• adjective:   having worth or merit or value

  Example: "A valuable friend"

• adjective:   of great importance or use or service

  Example: "Valuable advice"