Is there a more efficient way of going though options in order?

I am sure there is a more efficient way of doing this I just don't know what it is. What I am trying to have happen is each time the player clicks the button to go through each one in order then start back over.

--// Required //--
local plot = script.Parent.Parent.Parent.BasePartLand
local numMaterial = 1
local numColor = 1

--// Buttons //--
local material = script.Parent.Material.SurfaceGui.TextButton
local color = script.Parent.Material.SurfaceGui.TextButton

material.MouseButton1Click:connect(function()
	if numMaterial == 1 then
		plot.Material = Enum.Material.Cobblestone
		numMaterial = numMaterial + 1
	elseif numMaterial == 2 then
		plot.Material = Enum.Material.Brick
		numMaterial = numMaterial + 1
	elseif numMaterial == 3 then
		plot.Material = Enum.Material.DiamondPlate
		numMaterial = numMaterial + 1
	elseif numMaterial == 4 then
		plot.Material = Enum.Material.Foil
		numMaterial = numMaterial + 1
	elseif numMaterial == 5 then
		plot.Material = Enum.Material.Granite
		numMaterial = numMaterial + 1
	elseif numMaterial == 6 then
		plot.Material = Enum.Material.Grass
		numMaterial = 1
	end
end)