Mystic Topaz is white topaz that’s treated with a permanent bond to have a wide variety of colors, the blue-greens being the best known. As with Aqua Aura Quartz, some people believe that Mystic Topaz has no metaphysical properties because of its treatment.
I don’t find that to be the case, though. My experience is that everything that exists has its own energy — it almost has to, as science is now showing us what mystics have known for aeons that everything is made of energy — and however something comes to be how it is today can change its energy, but it definitely has energy.
Mystic Topaz has a combination of the properties of topaz and the color energies brought to the stone through its permanently bonded color.