Can diamonds scratch tungsten?

Can Diamonds Scratch Tungsten?

Diamonds are known for their extreme hardness, with a Mohs hardness rating of 10, making them highly resistant to scratching. But what about tungsten? Can diamonds scratch this relatively hard metal? Let’s dive into the answer to this question and explore more about the properties of diamond and tungsten.

Direct Answer:
Yes, diamonds can scratch tungsten. Diamonds are one of the only materials that can scratch tungsten, which is rated at a Mohs hardness of 9.

Why Can Diamonds Scratch Tungsten?
In the Mohs scale of hardness, diamond ranks a 10, making it the hardest substance known, while tungsten, ranked at 9, is one of the hardest but not as hard as diamonds. The difference in hardness between diamond and tungsten is due to their varying crystal structures and the types of bonds that hold them together. Diamonds are composed of pure carbon and are known for their crystal lattice structure, which allows for their incredible hardness.

On the other hand, tungsten carbide (tungsten) has a complex crystal structure and bonds, making it highly hard and resistant to wear, but not as resistant to scratching as diamonds. In fact, tungsten has a lower hardness due to its metal-to-carbon ratio and the resulting grain structure. This disparity in hardness between diamond and tungsten is what makes it possible for diamonds to scratch tungsten.

Interesting Facts About Diamond and Tungsten:
• Diamond is not as rare as you might think. While diamond engagement rings are a classic and romantic symbol, only 1 in 5 women wear diamond engagement rings worldwide.
• Tungsten carbide, known as tungsten, has a lower melting point. At 3415°C, tungsten carbide melts at a temperature significantly lower than diamonds.
• Diamonds can undergo various treatments. Lab-created diamonds, like laboratory-grown diamonds or gem-quality diamond simulants, are not as hard or valuable as natural diamonds but are still considered authentic.