Stockholm 2014: Swedish studio Front presents spherical glass lamps that appear to be steamed up at the Stockholm Furniture Fair and Northern Light Fair, which opens today.

Front's Fog pendant lamps for Swedish lighting brand Zero consist of a glass ball that is frosted on the bottom and gradates to transparent at the top. "With no apparent light source, Fog looks like a flaming planet, a mystical hovering globe," said the designers.

The spheres were sand-blasted on the inside to create the foggy effect and at first glance the light seems to shine from this cloudy base. "The light appears to shoot up from the bottom of the globe, emitting an ambient glow that rises like a magically fiery fog," the studio said.

In fact an LED light source is hidden in the socket, which illuminates the frosted glass so it glows. The effect is intensified in the dark, when the contrast between the top and bottom is amplified.

Metal fixtures are available in copper or powder-coated in black or white, and also with a black or white cord. The lamps are currently on display at the Stockholm Furniture Fair and Northern Light Fair, which continues until Saturday.