GUEST: This belonged to my husband's grandmother.

She lived in Washington D.C.

they were German Americans.

My husband's grandfather was a, uh, sort of an entrepreneur in Washington D.C.

And he would go to New York City from time to time and buy pieces of jewelry for her, and this was one of them.

I believe it was probably for their 50th wedding anniversary.

This would've probably been in the mid-'50s, I'm guessing.

APPRAISER: I looked at it.

GUEST: Mm-hmm.

APPRAISER: I was dating it, along with my colleagues at the table, for something that was made in the early 19-teens.

GUEST: (exhales) Really?

APPRAISER: He could've bought it old, though.

GUEST: It could've been... APPRAISER: He could've bought an estate piece back in the '50s.

GUEST: True.

APPRAISER: Know anything about the maker of it?

GUEST: Well, um, I've noticed that there's a mark on it that says Cartier.

APPRAISER: Yes, it's Cartier New York.

GUEST: Ah.

APPRAISER: So it says "N.Y."

right after the Cartier script.

It's set with two beautiful sapphires.

The main sapphire, which is the large sapphire on the bottom, it's approximately ten carats.

It could be approximately 12, but it's hard to know exactly.

GUEST: Really?

Wow.

APPRAISER: Yeah, it's bezel-set, so, conservatively, I'm saying it's about ten carats.

GUEST: Hm, interesting.

APPRAISER: It looks like a Ceylon stone, which is the region of where the stone is-- sapphire is from, which is now Sri Lanka.

And Ceylon stones are usually powdery, more brilliant.

They're lighter, they're not as saturated as the darker stones are.

GUEST: Okay.

APPRAISER: Um, and this is very apropos for this time period as well, the 19-teens, when they were mining a lot of these around that time period.

APPRAISER: And the smaller stone, I think is around three carats, approximation.

APPRAISER: Same material, though, the same saturation.

The lighter, sort of more vibrant, brilliant color of sapphire.

It's suspending from a beautiful necklace that is very, very fine.

And it's platinum, and it's so fine that some of the little detail in there that you can see, like little, tiny wires.

GUEST: Hm.

APPRAISER: And that's appropriate for the 19-teens as well.

GUEST: Ah.

APPRAISER: It's also set with some small round-cut diamonds.

GUEST: Yes.

APPRAISER: Just little accent stones.

It's really chic.

I think a conservative value for insurance purposes... GUEST: Mm-hmm APPRAISER: ....would be $75,000.

GUEST: Okay, that's good.

That's very good.

APPRAISER: We see a lot of nice things on ROADSHOW, but this is spectacular.

GUEST: Yes.

Yeah, well, thank you.

APPRAISER: I love it.