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G-Stone is a ceramic sponge that is completely inert. This means it will not emit any smoke or vapor by itself. Your concentrates are absorbed into the stone and once the temperature is hot enough the concentrates vaporize inside the stone. Since there is no water to filter out taste, together Genius Pipe and G-Stone give you undiluted tasty hit. Users can enjoy the full flavor of their concentrates. No rig, water, hot nails or torches are needed, just your Genius Pipe, G-Stone, a lighter and your favorite dab.