What Is the Hardest Substance on Earth?

Elmira | 16 - 01 - 2022
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Questions 1 - 10

What's the Only Thing That Can Scratch a Diamond?

Questions 2 - 10

Silicon Carbide Is Nearly as Hard as Diamond.

Questions 3 - 10

What Percentage of Mined Diamonds Are Gem-quality?

Questions 4 - 10

Diamonds Are Made of?

Questions 5 - 10

The Word Diamond Is Coined From the Greek Word

Questions 6 - 10

Which Is the Largest Diamond Ever Recorded?

Questions 7 - 10

Many Ancient Cultures Believed That Diamonds Gave Their Wearers Courage and Strength in Battle.

Questions 8 - 10

When Did Engagement Rings Start in America?

Questions 9 - 10

Synthetic Diamond Prices Are Typically More Costly Than Natural Diamonds.

Questions 10 - 10

What Are Man-Made Diamonds Made From?
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