Neither sleet nor snow nor recession can stop this family from growing its century-old legacyJeffrey Roseman’s grandfather became a jeweler in 1914 and worked his way through the Great Depression in various jewelry-store jobs until he hung out his own shingle in Bridgeport, Conn., in the early ’40s. Jeffrey jumped into the family business during another economically tumultuous time: In 1980, he went to work with his dad, Harvey, at David Harvey Jewelers in Norwalk, Conn. Twelve years later, the duo doubled the store’s square footage and brought another generation into the fold: Jeffrey’s son Ben and Ben’s wife, Kayli, help Jeffrey oversee the Darien, Conn., location that opened in 2008—in the midst of another economic disaster. It takes more than a recession to stop the Rosemans.Career ChallengesJeffrey: When I entered the business in 1980, the country was in a terrible reces