1169 Valencia St., San FranciscoHandcrafted. Small-studio artists. If customers take away nothing else from their visit to Betsy Barron’s Love & Luxe, she hopes they remember those two important concepts. The store, which Barron founded in 2011, sits smack in the middle of the Mission District, one of San Francisco’s most diverse neighborhoods, and sells pieces from more than 40 artists who specialize in handmade jewelry. With such a cross-section of designs—and an eclectic clientele—Love & Luxe offers everything from $20 bracelets crafted of recycled skateboards to $10,000 diamond necklaces. Yes, it’s jewelry. But Barron prefers to think of it all as art.Humble BeginningsA Rhode Island School of Design–trained jeweler who got started at a makeshift bench under her loft bed on Haight Street 25 years ago, Barron had dreamed of owning her own store for more than a