S: (adj) precious (of high worth or cost) "diamonds, sapphires, rubies, and emeralds are precious stones"
S: (adj) rich (of great worth or quality) "a rich collection of antiques"
S: (adj) semiprecious (used of gemstones having less commercial value than precious stones) "such semiprecious stones as amethyst, garnet, jade, and tourmaline"
S: (adj) worth (having a specified value) "not worth his salt"; "worth her weight in gold"; "an appraisal determined the antique carved chair was worth $900"