Half-Sphere BE01124 with 2 ports (2-0) - Richelieu Hardware
Richelieu BP3922900: 1-1/4" Evanston Sphere Cabinet Knob - Matte Black
Richelieu BP878940CHBRZ: 1-9/16" Traditional Sphere Cabinet Knob - Champagne Bronze
Richelieu Functional 1-1/4 Inch Diameter Knobs with Chrome Finish BP3922175 | CabinetParts.com
Richelieu BP878930900 Matte Black 1-3/16 Inch Round Cabinet Knob - PullsDirect.com
File:Sphère en quartz (cristal de roche) dite "de Richelieu", XVIIIe siècle, galerie de minéralogie du Muséum national d'histoire naturelle.jpg - Wikimedia Commons
SPHERE BE01289 with 4 ports (2-2) - Richelieu Hardware
Richelieu America BP36673790 at Deluxe Vanity & Kitchen Serving Van Nuys Eclectic - Van-Nuys-CA
Richelieu Firenze 1-9/16-in Chrome Globe Traditional Cabinet Knob in the Cabinet Knobs department at Lowes.com
Richelieu 101664204 | McLendon Hardware
Richelieu Mericourt 10-1/8-in Center to Center Brushed Nickel Arch Handle For Use On Appliances Drawer Pulls in the Drawer Pulls department at Lowes.com