Where specifically is glass made around the world?

From what I understand, sand (yes, regular Beach Sand even) is heated at ultra high temperatures, liquifies, then can be created into glass objects. There is also an Art Form where Artisans put a glass tube of sorts into the liquified state of the sand (glass liquid) and then blow it into forms like vases, paperweights, etc...

any sand ... as long as it has

........ in it
Glass cames from sand which was melted into Glass.