precious vs valued

precious and valued both are adjectives.

Word	Noun	Adjective	Verb	Adverb
precious	No	Yes	No	Yes
valued	No	Yes	No	No

As adjectives, precious and valued are synonyms defined as:

precious and valued: held in great esteem for admirable qualities especially of an intrinsic nature

precious (adjective)	valued (adjective)
obviously contrived to charm	(usually used in combination) having value of a specified kind
characterized by feeling or showing fond affection for	held in great esteem for admirable qualities especially of an intrinsic nature
of high worth or cost
held in great esteem for admirable qualities especially of an intrinsic nature

precious (adverb)	valued (adverb)
very