5 Fascinating Diamond Facts You Didn’t Know

White gold diamond crossover band featuring baguette and round cut diamonds in a modern, elegant design.

At Diamond Tales, we love sharing gemstone knowledge that makes you see diamonds in a whole new light. Beyond their sparkle, diamonds carry stories of history, science, and symbolism. Here are five of the most fascinating facts that prove why these gems are truly extraordinary.

1. Diamonds Are Over a Billion Years Old

Formed more than 100 miles beneath the earth’s surface under intense pressure and heat, diamonds are some of the oldest natural treasures on earth — dating back up to three billion years. They were brought closer to us through deep volcanic eruptions, making every diamond not just beautiful, but a piece of earth’s ancient history.

2. Diamonds Are the Hardest Natural Substance

Ranking 10 on the Mohs Scale of Hardness, diamonds can only be scratched by other diamonds. This resilience makes them the ultimate symbol of enduring love — and ensures they last for generations. (Pro tip: if sandpaper can scratch it, it’s definitely not a diamond.)

3. Diamonds as Engagement Rings Date Back to 1477

The tradition of diamond engagement rings began when Archduke Maximilian of Austria proposed to Mary of Burgundy with a ring set with diamond shards spelling the letter “M.” More than 500 years later, diamonds remain the most iconic symbol of love and commitment.

4. Diamonds Were Once Believed to Have Healing Powers

In the Middle Ages, diamonds were thought to cure illnesses, ward off evil, and protect soldiers in battle. They were even ingested in hopes of boosting vitality. While we no longer use diamonds as medicine, their mystical reputation only adds to their allure.

5. The Word “Diamond” Means Invincible

The word diamond comes from the Greek word adamas, meaning “invincible” or “indestructible.” Made of tightly bonded carbon atoms, diamonds live up to their name. Wearing one can feel like wearing a piece of indestructible strength — with a touch of magic.

The Diamond Tales Perspective

Diamonds are more than just beautiful gemstones — they are timeless artifacts of nature and culture. From their billion-year-old origins to their symbolic strength, every diamond tells a story.

Explore more with our Jewelry Care Guide or discover our Free Resources to continue your diamond education.

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