@Disguised22
That's because it wouldn't do anything.
First, you have to use a specific kind of sand(Silica), or at least a sand that is free of impurities(Basically, glass is the ultimate white supremacist. To get the clearest glass, you gotta start with the whitest sand).
Add a bunch of other chemicals there.
Then you gotta heat it real good.
Like, AT THE VERY LEAST, the furnace needs to be hot enough to smelt iron(So that's above 1500°C, all the way up to 2500°C).
Once you're done blowing or forming the glass, ypu have to let it cool VERY SLOWLY, in an oven that is only slightly colder than the oven used to melt the glass.
BTW, if you skip that last step, your glassware will shatter.
The sole exception is a Prince Rupert's drop, which is made by dripping molten glass into cold water, which instantly causes the glass to solidify.
The main body of the drop is super durable to shattering, but if you apply just a tiny bit of force to the tail, the thing literally blows up.
Violently.