Marquise-cut Diamond & Platinum Ring

Value (2012) | $40,000 Auction$60,000 Auction

I inherited a box of jewelry, a lot of costume jewelry, and this was in it.

Did you have any idea if this was a costume piece or a real piece?

I was hoping it was real, but I didn't know.

Well, I can tell you that it is real. It is marked platinum. This is a wonderful piece from the 1950s. And we have tested it, and it's a real diamond.

Oh, good.

So we can take it a step further and say that the center diamond is a fancy colored diamond, which means it has yellow and brown in it, which makes it more unique than the standard white diamond.

Oh, good.

Yeah, and by measurement, it comes up to seven carats.


So it's a big diamond. And at auction, an item like this would sell for between $40,000 and $60,000.

Oh, that's wonderful.

Is that what you expected to hear?


Appraisal Details

Heritage Auctions
Dallas, TX
Appraised value (2012)
$40,000 Auction$60,000 Auction
El Paso, TX (June 18, 2011)
20th Century
Diamonds, Platinum

Executive producer Marsha Bemko shares her tips for getting the most out of ANTIQUES ROADSHOW.

Value can change: The value of an item is dependent upon many things, including the condition of the object itself, trends in the market for that kind of object, and the location where the item will be sold. These are just some of the reasons why the answer to the question "What's it worth?" is so often "It depends."

Note the date: Take note of the date the appraisal was recorded. This information appears in the upper left corner of the page, with the label "Appraised On." Values change over time according to market forces, so the current value of the item could be higher, lower, or the same as when our expert first appraised it.

Context is key: Listen carefully. Most of our experts will give appraisal values in context. For example, you'll often hear them say what an item is worth "at auction," or "retail," or "for insurance purposes" (replacement value). Retail prices are different from wholesale prices. Often an auctioneer will talk about what she knows best: the auction market. A shop owner will usually talk about what he knows best: the retail price he'd place on the object in his shop. And though there are no hard and fast rules, an object's auction price can often be half its retail value; yet for other objects, an auction price could be higher than retail. As a rule, however, retail and insurance/replacement values are about the same.

Verbal approximations: The values given by the experts on ANTIQUES ROADSHOW are considered "verbal approximations of value." Technically, an "appraisal" is a legal document, generally for insurance purposes, written by a qualified expert and paid for by the owner of the item. An appraisal usually involves an extensive amount of research to establish authenticity, provenance, composition, method of construction, and other important attributes of a particular object.

Opinion of value: As with all appraisals, the verbal approximations of value given at ROADSHOW events are our experts' opinions formed from their knowledge of antiques and collectibles, market trends, and other factors. Although our valuations are based on research and experience, opinions can, and sometimes do, vary among experts.

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