Health stones, like the vaporgenie (pipes with healthstones built in) work great for vaping herb on the go with just a lighter and ordinary pipe (just make sure its a big bowl and theres 1/4" clearance from nthe herb to the health stone on top or it will burn). That said, they taste like hot metal bc of the carbide ceramic they use, and they cost about 40x their actual market value. What stoners know as "Health Stones" and pay upwards of $60 for are what lab technicians will recognize as carbide cermaic filter discs, made for filtering hot gases, that cost about $2 on average.For something similar that works a lot better get a pyrex/borosilicate fritted disc. Lab Planet has chemglas ones for about $10 for an inch diameter for sale to the general public (registered labs get better rates). Be sure to get the coarse or extra course grade, the finer grades dont have enough airflow. A fritted disc is grains of glass that have been loosely sintered together to make a sugar cube textrued porous disc that can be used like a health stone on top of herb for vaping, with the added benefit of tasting like nothing (instead of hot carbide), plus they are able to be heated with a torch for oil dabs from a regular bowl (which works better than a nail, theres no scorching and less waste, but still not as good as a concentrate bowl/wand setup).Seriously, skip the healthstone, go for a fritted disc, its 1/6 the cost and much tastier. For more information about fritted discs and other advanced vaping tools, check out the "Apparatus" section of my Vapor Volumes:
https://www.rollitup.org/medicating/641222-vapor-volumes-vlad.html