New York based architecture studio Caliper Studio also has a fabrication shop where they can develop many of their designs — especially those for custom "doors, windows, railings, stairs, facade components, solar shading and skylights." Their Genetic Stairs are an integral part of an apartment renovation they did for Upper West Side art collectors...
Genetic Stairs are made of white translucent Corian and stainless steel and low-iron glass. You can see more of Caliper Studio's work on their site.
Via: Design Milk
(Images: Ty Cole)