Is a diamond invincible

Diamonds are not invincible. The Word invincible is better used in situations describing actual competition or battlebetween two or more deliberately acting people. The Word comes from the same root that gives us the Word victor, the winning individual or side in an active conflict. Diamonds are also not indestructible. They can be fractured, crushed, or destroyed in other ways. Diamonds are very hard and very useful in situations where very durable materials are needed, but they are definitely not impossible to destroy.