Minecraft wiki entry for Block_of_Netherite, associated text: Blocks of netherite can be used to power a beacon. The beacon can be powered by a 3×3 square of netherite blocks underneath it, and can also optionally include a 5×5, 7×7 and 9×9 layer in the shape of a pyramid under the original layer to increase the effects from the beacon. The layers do not have to be entirely netherite blocks, as any combination of iron blocks, gold blocks, diamond blocks, emerald blocks, or netherite blocks can power a beacon.