Building a designer jewelry collection using pre-vetted vendors is catching on Back in the day, small, unknown designers could wrangle an appointment with a high-profile buyer—whether through a connection or by simply refusing to take no for an answer—and sell a collection based solely on a few samples and a dream. But in today’s oversaturated market, where open-to-buys are conservative and memo is at an all-time high, emerging and even established designers are looking for ways to gain an edge over the competition.Enter the concept of multivendor showrooms, a haven for retailers looking for the complete package: a designer already schooled in the art of merchandising, customer service, and brand identity.“Retailers don’t want to invest in a new designer these days because they aren’t sure the designer will be around for a second year,” says Andrea Hansen, founder of Luxe I