White porcelain door knobs have a summery appeal (note the door knobs pictured in today's post Walls, Windows & Floors: Jewel-Toned Voile Curtains). "Popular from the Civil War to 1930s, white doorknobs are made from white clay with a fired porcelain surface, similar to china," according to Rejuvenation Hardware.

Above: Classic and clean, the White Porcelain Door Knob is $25 at Rejuvenation Hardware.

Above: In the Design Voyeur category, NYC-based (but Brooklyn manufactured) high-end hardware purveyor Nanz is the holy grail. Above L: Model #1423. Above R: Model #1425. Locate a dealer and peruse the offerings at Nanz.

Above: Emtek's Ice White French Antique Knob; $72 at Knobs and Hardware.

Above: Thomas Hoof Produkt in Germany offers a Porcelain Door Set, which includes two knobs, for €26.

Above: Amerock's White Ceramic Door Knob; $88 at Knobs and Hardware.

Above: White Porcelain and Rosette Doorknob Set; $34.99 at Amazon.