There are a few things to look for when determining whether or not a particular glass piece is handmade.
The first clue that a piece of glassware is handmade will be a small “navel,” or circular point at its base. This is where the glass was cut from the blowing tube, indicating that it is in fact handblown. Another indicator is the thickness of the glass, as handmade glass is thicker and stronger than industrialized glass. Tiny bubbles may appear inside the glass as a part of the crafting process. Finally, handblown glass is distinguished by the multitude of color varieties that can be used during its production. No two pieces are exactly the same, and the uniqueness of each individual piece is what makes handblown glass so special.
