Dr. Ulrika Dannens-Janensen

Ulrike Daniels Johansson, senior manager of diamond research here.

Yeah, please, let's.

That's okay.

So now taking your mystery diamond and looking at it under the microscope.

Yeah, there's a little bit of cat hair there. A little bit of fluff, but that's not a problem.

What I'm seeing here, at least, is that it's very high clarity.

That's good.

We need to give it a little bath. It's going to go in liquid nitrogen. So liquid nitrogen... I'm sorry, what?

Your diamond is going to take a bath now.

Thinking about it, and then the squiggles come up.

This one here?

This is a diamond, so we're not looking at a simulant.

We have a diamond here.

It's that imprint of how it grew, how it survived in the earth, or how it was produced in a laboratory.

Yes, exactly. The placement of freckles on anyone who has freckles is slightly different.

They're teeny tiny little black specks.

That feature creates this spectral signature.

One of the things that you'll notice is that there is a line going through it, a layer.

So as they were growing, probably they were struggling a little bit with their conditions. They weren't able to maintain it. They had to stop. They take it out, get it a little clean, polish it up, and then they grew a second layer.

Yes, different stages.