Tiffany jewelry designs are available through authorized Tiffany mall online, Tiffany retailers and official boutiques. Individuals interested in purchasing Diamonds by the Yard Tiffany jewelry can visit a boutique or shop online at the official website, where a store locator can also help interested buyers locate an authorized retailer in their area. Because these designs are very simple they can be easily imitated, and buyers should be cautious about deals that seem too good to be true or offers from unverifiable merchants.