Below are some educational overviews of the difference between glass vs. crystal wine glasses. See my video on the hands on when I attempt to explain a little of what I experienced between the two type of glasses.
The primary difference between crystal vs. glass is that crystal glass contains anywhere from 2–30% minerals (lead or lead-free). The key feature of crystal wine glasses is that the minerals strengthen the material, making it possible to produce durable but thin wine glasses.
There are a great many types of glass, so suffice it to say that this article breezes over the basics. That said, the primary benefit of glass is that it’s non-porous and inert, meaning that it will not absorb chemical aromas or corrode if you wash it in your dishwasher. Most glass wine glasses will have a lip at the rim for durability which is not a desirable feature for wine enjoyment