GUEST: I brought a necklace that was given to me as a wedding gift.

It belonged to my great-grandmother.

I believe it was actually a gift for her 18th birthday.

So I imagine it would be the 1910s is when she received this.

It was given to me from my aunt,and with it, she sent a note that said that it was given to my great-grandmother, grandmother, aunt, and now me.

APPRAISER: What year did you receive the watch?

GUEST: 2016 was the year we got married.

It's kind of fun, because today happens to be my wedding anniversary, too.

APPRAISER: Oh, congratulations.

GUEST: (laughing) Thank you.

APPRAISER: It's Cartier ladies pendant watch.

Cartier, it's a Paris firm.

They were founded in 1847.

The time period.

You are right about on the money.

1910, 1915, Edwardian period.

Also, Bell Époque.

BelleÉpoque is not just a time period, it's also a style.

This has pearls, it has diamonds, it has enamel work, the blue enamel throughout.

It's set in platinum, it's set in yellow gold.

GUEST: Oh.

APPRAISER: The diamonds in here are rose cut diamonds.

The pearls are all natural.

The back here, it's blue guilloché enamel, which is hard-fired enamel on top of the metal.

There's diamond-set initials.

Are those Grandma's initials?

GUEST: E.S.

was her initials.

It's flowery letters, so I wasn't sure if it was just a design or if it was in fact initials.

If that looks like an E.S.

to you, (chuckling) then I'll trust your judgment on it.

APPRAISER: It's an E.S., and that was a custom order.

Everywhere on here are jewels.

There's something a little extra special, there's something a little fancy.

The quality of an object like this, it-it's absolutely phenomenal.

Second to none.

Cartier had special movements made.

This was a collaboration with Cartier with another famous company, Jaeger-LeCoultre.

You have the original box.

GUEST: Yes.

APPRAISER: Or presentation case.

You open the double door, there's a beautiful treasure inside.

And Cartier made that famous.

Retail price on this watch is gonna be $25,000 to $30,000.

GUEST: (chuckling) Holy smokes.

That's... that's wild.

(laughs) Well, I better keep care of it.

Safety deposit box, here we come.

(chuckles) APPRAISER: Unbelievable condition, and unbelievable to find it in the original box.

It's awesome.