Firefly Lamp (Block)

My idea with this suggestion is for this to be an early game(ish) lighting block likely to be made with a Firefly Bush Surrounded by Glass in a Crafting table or a Firefly Bush Above Dirt with glass surrounding in a crafting table this could emit an identical light level (or slightly higher light level) to the Firefly bush but this would open slightly Bush lighting blocks for builds and would be an alternative to using 'Jack 'o Lantern(s)' as an Early Game Light source block.