Built circa 1910 as the Timkin Building, the San Diego Jewelers Exchange at the corner of Sixth and E Streets is a registered historical site housing eight floors of independent jewelry manufacturers, wholesalers, retailers, and repair shops in downtown San Diego's Gaslamp Quarter. The multi-tenant structure maintains an average 90% occupancy rate and draws artisan tenants whose craft focus aligns with the reclaimed-materials dealers at India Street Antiques in Little Italy. Services available across the building's directory span custom CAD-CAM design, diamond cutting, GIA-certified appraisals, laser-weld repair, watch brokerage, and wholesale gemstone importing—concentrating the full jewelry supply chain under one roof. The Exchange sits two blocks from the Horton Plaza district and within walking distance of Petco Park, the San Diego Trolley, and the downtown courthouse, positioning it at a crossroads of Gaslamp foot traffic. That central location places the building within the same gallery and design corridor anchored by Sparks Gallery on Fifth Avenue. The eight-story complex houses independent bench jewelers, GIA and AGS gemologists, diamond importers, estate appraisers, and luxury watch brokers—a vertical concentration of jewelry-trade specialties unmatched in San Diego County.