Mohs scale

Proper noun

A scale of the hardness of minerals based on their ability to scratch one another

Japanese Meaning

鉱物の硬さを、互いに傷をつける能力に基づいて評価する尺度

To determine which gemstone could withstand daily wear, the jeweler checked its rating on the Mohs scale.

どの宝石が日常の使用に耐えられるかを判断するために、宝石商はその評価をモース硬度で確認した。

Sense（1）

A scale of the hardness of minerals based on their ability to scratch one another