Call it the trickle-down-effect for engagement ring trends — whenever a celebrity gets engaged and starts sporting a shiny new bauble, jewelers everywhere rush to craft similar rings and capitalize on the popular urge to sport the same jewelry as America's pagan cult of entertainers or the U.K.'s pagan cult of inbred rich people, er, royalty.

The New York Daily News reports that Miley Cyrus and Liam Hemsworth's recent engagement was a boon to the entire engagement ring racket, sparking a general yearning for something resembling the $250,000, 19th century cushion cut diamond ring that Hemsworth commissioned designer Neil Lane to create. Though Lane wouldn't talk about the publicity his creation generated, other jewelers were offering four-figure clone rings for the all the normals.

Similarly, Kate Middleton's sapphire engagement ring helped more people consider non-diamond center stones in their engagement rings. The buzz generated by celebrity trinkets serves as a boon to the entire jewelry market, setting trends and bringing in more business for the original designers, though it's usually a discreet sort of business because nobody wants to admit that they want "the Miley Cyrus ring" to serve as an eternal token of their fidelity and devotion to their prospective lifemate.

Celebrity engagement rings like Miley Cyrus' sparkler mean increased business for jewelers [NYDN]