Tiffanys Battles Costco Over Knock Off Diamond Rings

Upscale boutique takes action to stop sales of fake versions of its iconic jewelry.
2:27 | 02/16/13

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Transcript for Tiffanys Battles Costco Over Knock Off Diamond Rings
Speaking of retail, a wild story. A big fight between tiffany's and costco. Tiffany's wants the big box store to knock off the knockoffs, selling fake versions of its iconic jewelry. Here's abc's tanya rivero. Reporter: It's the little blue box, versus the big box retailer. On valentine's day, as lovers everywhere snuggled,iffany and co. Slapped costco with a lawsuit. These pictures allegedly show tiffany koffs inside a california costco. Tiffany sent someone in, bought one of the rings. They were not made by tiffany. They are not tiffany rings. They have nothing to do with tiffany. Reporter: Being sold at a fraction of what real tiffany rings cost. Everybody would love a deal on a tiffany ring. And unfortunately, it just doesn't happen. Tiffany diamonds are never on sale. Reporter: Tiffany alleges costco had been selling the fakes for years. Hundreds, maybe thousands, of engagement rings were sold using the tiffany trademark. Reporter: A rep for costco told abc news, we will be making no comment on this story as it involves pending litigation. Court papers say an unnamed consumer blew the whistle, contacting a tiffany store to complain. She was offended by the fact that tiffany would be selling engagement rings in costco. In this particular case, there's enormous room for confusion among consumers because costco does sell a of big brands at deep discounts. Reporter: Shoppers at tiffany's flagship store weighed in. You think you're buying into a brand. And you find out it's a rip-off. When you buy a tiffany diamond, you're buying into the row mant schism and there's only one place to get it. Costco has removed all tiffany labels. But tiffany is a suing for additional mary damages. And whether customers will sue remains to be seen. If you have any doubt about a tiffany's item you own, you can bring it into a tiffany's store. They'll tell you if it's the real thing. Diamonds are never on sale. That's right. Total coincidence that tanya and bianna wearing blue today. Not tiffany blue, though. Time for a check of the

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