My Suggestions

mũthiithũ

n. · class 3/4

  1. treasure, valuable possession. a valuable object or collection of valuable things; a treasure or precious possession

Example: Ũũgĩ nĩ mũthiithũ wa thimo, na ũngai nĩ kĩndũ kĩrĩ magigi harĩ eehia. (SIR 1:25) — Among wisdom’s treasures is the model for knowledge; but godliness is an abomination to the sinner.