This sure looks like a real diamond to me!

Do you think I'm too stupid to recognize real diamonds?

Whether they were real diamond or artificial, I cannot say.

It's like he's throwing away real diamonds for great big pieces of glass.

They look like real diamonds from here, don't you think?

But the more we read through it, the more I realized that there are real diamonds here.

You don't have to compare real diamonds to synthetic ones.

But it is gold, and that's a real diamond.

The third approach is to measure light behavior in a real diamond.

"Unless I'm wrong, we've got our hands on a real diamond!"