純じゅん分ぶん

noun

fineness; purity (of gold)

Technical term used in metallurgy and jewelry to express the proportion of pure gold in an alloy.

• この金きん貨かの純じゅん分ぶんは99.9%です。

  The fineness of this gold coin is 99.9%.

• 純じゅん分ぶんが高たかいほど、金きんの価か値ちは上あがります。

  The higher the purity, the greater the value of the gold.