Jewel
Gem
noun, の adjective
A treasure stone is a very valuable stone. What kind of stones are considered treasures? How about a jewel, or a gem?
ほうせき
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
あの赤い宝石のゆびわは、だれかのわすれものです。
That ring with the red jewel is somebody's lost property.
あの大ふごうは、メイドに宝石があしらわれたそうじどうぐをつかわせている。
That billionaire has his maids use cleaning tools decorated with jewels.
お姫様は美しい宝石のついた腕輪を時計回りに回しました。
The princess turned the beautiful jeweled bracelet clockwise.