Diamonds Aren’t So Tough

Most people have heard that diamonds are the hardest gemstone and are harder than most things on the planet. Hardness is defined in the jewelry industry as resistance to scratching. So that means that almost nothing can scratch a diamond. And that is why a diamond is generally recommended as the top choice for an engagement ring stone. Sapphires are tougher than diamonds. Example of a sapphire ring from MySapphireSource. But did you also know that while the hardness of a diamond is excellent,...