The Lamp is a decorative light source block. To it turn on, you have to right-click it.
The textures the lamps uses are coloured wool to represent the lamp shade and grey concrete for the stand. When you put a Lamp above another Lamp, they will connect themselves.
Crafting Recipe[]
The Lamp can be made using 5 wool of any colour (they must all be the same colour though), 1 Glowstone and 1 Obsidian.
Place 3 wool across the top, one on the middle left and right, glowstone in the exact middle, and obsidian on the bottom middle. The recipe yields 2 lamps.