Sapphire is a gem with history, strength, and meaning. Whether you’ve seen it on a royal crown or a unique engagement ring, sapphire stands out. Here are 10 fun and interesting facts about this incredible stone.

1. It’s Not Just Blue

Most people think sapphires are only blue, but they come in many colors like pink, yellow, green, purple, and even white. The only color they don’t come in is red. (That’s because red sapphires are called rubies!)

2. It’s One of the Hardest Stones on Earth

Sapphire scores a 9 on the Mohs scale of hardness, just below diamond. That makes it perfect for rings you’ll wear every day, like engagement rings.

3. It’s a Birthstone Too

If you were born in September, sapphire is your birthstone. It’s also used to celebrate 5th and 45th wedding anniversaries.

4. It Was Once More Popular Than Diamonds

Before diamonds became the “standard,” sapphires were a top choice for engagement rings. People loved them for their deep color and royal feel.

5. It’s Known as the Stone of Wisdom

Sapphire has long been connected with wisdom, loyalty, and truth. Many believe it helps the mind stay calm and focused.

6. Royals Love It

One of the most famous engagement rings in the world is a sapphire—the deep blue ring worn by Princess Diana and now by Kate Middleton.

7. It’s Made of the Same Material as a Watch Crystal

Sapphire is a type of corundum, the same material used to make scratch-resistant watch faces. It’s incredibly durable and built to last.

8. Heat Can Change Its Color

Natural sapphires are sometimes heated to enhance their color. This is a common and accepted treatment that makes the blue even richer.

9. Some Sapphires Show a Star

A rare type of sapphire has a star-like pattern across the surface, called “asterism.” These star sapphires are often used in special jewelry pieces.

10. Sapphires Are Found Around the World

You can find sapphires in places like Sri Lanka, Madagascar, Australia, and even Montana in the U.S. Each location produces different shades and qualities.