Mioro Gold LLC

At 546 5th Ave, on the 18th floor above the avenue’s usual bustle, Mioro Gold operates quietly among the city’s jewelry trade. Their workspace is tucked behind the lobby doors, turning raw precious metals into rings, pendants, and bracelets for small ateliers and independent designers. Casting, engraving, stone setting, and alloy formulation happen in the same rooms, where meticulous machinery hums away from the avenue’s glare. Unlike Midtown’s showrooms with rotating displays, this is a workshop that manufactures what others sell. Near Bryant Park’s glass towers, the elevator rises past the garment district’s competitive floors before stopping at suite 1809. Clients drop off sketches, source gemstones, or collect completed pieces without the usual retail overhead. The facility handles custom orders in a range of karats and finishes, plus small-scale production runs for emerging labels. Overseas clients ship wax models to the 5th Avenue address and receive finished castings weeks later. To reach the floor, dial (212) 302-6077. After hours, the directory fades to black, but the morning shuttle drops you right at the building’s revolving doors. Remember the floor number—18—if you’re racing between appointments. From here the subway is two blocks, the PATH concourse below Herald Square is closer, and a link can drop a pin on your phone.