Gem Semi is a beautiful wall lamp in acid-etched glass by Ludovica and Roberto Palomba for Italian Foscarini. The wall lamp is part of Foscarini's lamp series, Mix&Match, which is based on the designers' three collections: Gem, Gregg, and Rituals. The Semi model takes its name from its cut-out shape, which makes the wall lamp appear to curve out of the wall. Like the rest of the members of Mix&Match, this wall lamp can also be chosen in white, graphite gray, or gold. It is also possible to mount the lamp upside down.

In conjunction with the launch of the colors for the Mix&Match system, Foscarini took the opportunity to update several of its lamps with "MyLight". These models are then dimmable via Bluetooth and Casambi when this is connected.