Luxury jeweler Tiffany & Co. has debuted an iPhone application that merges mobile and interactive shopping for consumers who are looking to select an engagement ring. The Tiffany & Co. Engagement Ring ...

The only thing that might be more legendary than the timeless robin's-egg blue Tiffany box is the brand's namesake setting.

Costco owes more than $19 million, a federal judge ruled Monday, for selling engagement rings it named after the storied jewelry shop Tiffany’s. MANHATTAN (CN) — Finding that Costco’s so-called ...

Tiffany & Co. is suing Costco for allegedly marketing engagement rings as "Tiffany" brand ... to observe that Costco was offering for sale what were promoted on in-store signs as Tiffany diamond ...