the Chaos Force is what gives the Master Emerald it's infinite energy as the Chaos Force is a realm of infinite energy, every single Chaos Emerald that draws on the power of chaos has a small link to it, but the Master Emerald has the strongest amongest them all never being able to run out of power unlike the Chaos Emeralds. The Master Emerald unlike the Chaos Emerald(s) has shown the ability to transfer a large amount of chaos energy into another Chaos Emerald and increase it's power until it turned into a Super Emerald.