Rob Zinn


Regular price $2,050.00

Viscosity is a uniquely shaped layered wall or ceiling sconce light, part of the award-winning Heliocentric lighting collection by Rob Zinn for blankblank. Colors applied to the back of each satin white layer glow subtly in natural light when the fixture is off but glow brightly when turned on or in darkness.

Available in standard colorways, custom color combinations and mono colors, in four sizes. Part of our Heliocentric collection of reflected color sconces. Designed for hardwiring with a standard junction box. Best when installed with a dimmer switch. Available in sizes ranging from 24″ to 47″. L & XL not recommended for ceiling installation. Assembly required.

Standard color options include Sorbet, Warm, Cool, Major,  Minor, Aether, Sky or monocolor Neon Yellow or Violet. 

Also available made to order in: Corona, Pine, Pastel or single colorways Neon Pink, Neon Red, Neon Orange, Orange-Red, Light Orange, Light Yellow, Lemon Yellow, Golden Yellow, Neon Green, Mint, Turquoise, Sky Blue, Soft Pink, Fiesta Pink, Cocoa Brown or Nut Brown. Please allow an additional 1-2 weeks for production of these colorways, which can be special ordered via an email to info (at)

Up to 75W A-19 soft white or equivalent bulb recommended, not included to avoid breakage. Standard GU-24 socket complies with California Title 24 energy standards. Powdercoated steel front plane, aluminum rear planes, spacers and canopy.

XL – 47″Hx22.5″Wx6.5″D: $3650
L – 40″Hx19.1″Wx6.5″D: $3150
M – 32″Hx15.25″Wx6″D: $2300
S – 24″Hx11.5″Wx6″D: $2050

Heliocentric Sconces Include Free Shipping in the Continental U.S. Click here for additional ordering information and our current Lighting Catalog. Click here to see the Expansion Sconce.

2-3 week lead time for S & M, 4-6 week lead time for L & XL
Made in Northern California

Click here to check out how we created our newest colorway, Sorbet.

Viscosity is customizable in each of its four sizes. Custom color combinations available with longer lead times, cost additional. Exterior-corded or LED light source options, not UL listed, also available, please inquire.

To purchase or inquire about options or showroom locations, please email us at info (at)

Heliocentric Lighting Colorways

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