There are many different kinds of concentrates and extracts and most all of them can be used on the Vapor Stone.
Shatter, Crumble, Wax, Budder, Sugar Wax, Sauce, Water Hash, Hashish, Rosin and most Oils as well. Depending on the product and melt temp, it is important to control the distance of the torch to the Vapor Stone. Most of the time, 2-3inches away from the Vapor Stone/concentrate is going to yield the best results.
Please reference Healthstone Usage blog post.