Merriam-Webster Collegiate Dictionary - valuable

 I. adjective  Date: circa 1576  1.  a. having monetary value  b. worth a good price  2.  a. having desirable or esteemed characteristics or qualities ~ friendships  b. of great use or service ~ advice  • ~ness noun  • valuably adverb  II. noun  Date: circa 1775 a usually personal possession (as jewelry) of relatively great monetary value — usually used in plural