The archaic Greek word from which the word “diamond” is derived is “adamas” (ἀδάμας). It means “invincible,” “unconquerable,” or “untameable”. The term was used to describe materials that were thought to be indestructible or incredibly hard. Over time, this term was associated specifically with diamonds due to their hardness and durability.
The word “diamond” itself comes from the Greek word “adamas,” reflecting the stone’s remarkable strength, as diamonds are the hardest known natural material on Earth. The name emphasizes their unyielding nature and resilience.