碧へき玉ぎょく

noun

jasper

Refers to the opaque, fine-grained variety of quartz used as a gemstone or ornamental stone.

• 碧へき玉ぎょくは古こ代だいから印いん章しょうや装そう飾しょく品ひんに使つかわれてきた。

  Jasper has been used for seals and ornaments since ancient times.