YELLOW PHANTOM QUARTZ CRYSTALS additionally contain the properties of limonite and stimulate the intellectual capabilities of the user. Yellow Phantom Quartz Crystals brings clarity of thought to the utilization of the healing energies of the mineral kingdom. The symbolic presence of the multitude of phantom crystals indicates the multifaceted lives which we all live. Yellow Phantom Quartz Crystals reveal the truth of existence to a clear and pure heart and mind.