GUEST: I didn't know much about them, but I called my Aunt Carol and she told me a little bit about this ring.

It was handed to her by her father-in-law and gave it to her as a present.

APPRAISER: I’m a September baby, so I have a soft spot for sapphires.

This is a platinum diamond and star sapphire ring, and then you have a pair of platinum diamond and star sapphire earrings.

While they look so, so similar and it's difficult to match these things this well... GUEST: Mm-hmm, right.

APPRAISER: that beautiful cornflower blue color, the ring actually predates the earrings.

GUEST: Oh.

APPRAISER: So I would date the ring to the late Art Deco period, probably around about 1935 to 1939.

GUEST: Oh, wow.

Okay.

APPRAISER: That central stone there is about 20 carats in a cabochon cut.

And then it's surrounded by old European cut and tapered baguette-cut diamonds, which together equal just under two carats.

Similarly, the earrings are also set with star sapphires, single-cut diamonds, which is an iteration of diamond cutting which is much more typical for the mid-1940s, so sort of the war era.

And I would date the earrings to the Retro period, mid-1940s.

Without a certification, you can't say with 100% certainty, but I would bet that they probably were mined in Ceylon, which is modern day Sri Lanka.

They're not signed, neither piece, unfortunately.

I do think that they're probably American.

Phenomena gems, particularly star sapphires in this case, are actually made by tiny rutile needle inclusions that overlap in a hexagonal pattern inside the stone.

GUEST: Oh, wow.

APPRAISER: And when a light shines on them directly, they make a beautiful star.

You can see the star best when you use a pinpoint light source.

It can be difficult to make out in daylight, but you can see here this strong six-pointed star when I shine this pinpoint light directly on it.

The earrings, conservatively, are in the range of $6,000 to $8,000... GUEST: Okay, great.

APPRAISER: in an auction situation, fair market value.

GUEST: Okay.

APPRAISER: And the ring, comfortably, is in the range of $10,000 to $15,000.

GUEST: All right, great.

Thank you.

Good to know.

APPRAISER: It’s a very pretty star sapphire ring.

GUEST: Thank you.