The tiara was made using diamonds and pearls already in the Queen's possession.

"We will travel long into the night," Jojonah said to him, "using diamonds to light the way, and thus make up the time lost resting here."

This is interchangeable so the operator can use differently shaped diamonds for different finishing effects.

"It sounds kind of weird, because you use actual diamonds, she said, but that's just a part of research and development."

Sometimes using diamonds to build everyday stuff seems like some kind of cheat!

His men have long controlled the mines, using diamonds to buy arms.

The bank decides to pay the blackmailer, using uncut diamonds.

Because of this, many important industries use diamonds as tools for cutting and polishing things.

The production team did not use real diamonds in the storyline and opted for plastic glass.

As expected, this makes them generally a better candidate for other means of engraving, most notably sandblasting or cutting using diamonds and water.