How are diamonds described in terms of hardness?

Diamonds are renowned for their exceptional hardness, which is a defining characteristic due to their crystalline structure. When described in terms of hardness, it is accurate to state that diamonds are hard but not indestructible. This implies that while diamonds can resist scratching and are among the hardest natural materials known, they can still be chipped or broken if subjected to a strong force or impact at a certain angle. This distinction is essential because it emphasizes that even the hardest materials have their limits when it comes to durability in real-world conditions. Understanding this aspect helps in appreciating the care required in handling diamonds, despite their reputation for being tough.