Below is an example of what Pressed Glass will look like without finished edges:
Tempered glass is also referred to as ‘toughened glass’ or ‘heat strengthened’ because the surface of the glass can withstand four times the impact of standard glass. Tempered glass is created by substantially heating the glass and then quickly cooling it creating compressive forces at the surfaces that resist breakage.
Tempered glass cannot be fabricated after the tempering process. Tempered glass is most susceptible to breakage at the edge of the glass.
Here is what a polished edge will look like.
3form’s Pressed Glass (and Poured Glass!) passes the ANSI Z97.1 test and can therefore be considered as safety glass.