While working on this article I was looking for affordable glass door knobs sold in the United States. What I found was a lot of crystal door knobs and few actually called glass door knobs. Now of course there is very little difference between a glass door knob and a crystal one, that the average human being could tell, since the difference consists of the amount of lead in the glass. There is however a world of difference between cut glass and blown glass for example.
If your home is traditional in style you might prefer cut glass door knobs, but if your home is contemporary with clean lines then you will certainly find the blown glass series much more appealing. Even antique blown glass door knobs like some of the 19th century ones, you might find in a store like About Olde Good Things in NY and CA, might fit your needs.
Today’s artists are using age old methods combined with today’s technologies to produce amazing glassware that was not possible many years ago. One such artist is Tracy Glover, who uses venetian glass techniques to make glass door knobs for cabinets and doors in amazing colors.
My favorite place for blown glass door knobs is incontestably the Verreries of Brehat in France. Their multicolor collection, produced in one of the most modern glass company in the world, can be highly personalized, and is now available anywhere in the world. Their glass door knobs are seen in many prestigious hotels and exclusive shops. This company sells mostly through well known home decorators, and a few specialty shops in Europe. Here are a couple of samples from their collection. 
All blown glass door knobs will be expensive to buy but you are getting a one of a kind item that you will not see anywhere else, as each will show individuality and particularities that can never be replicated.
Blown glass is no longer the only method used to produce these knobs. Some are created by heating glass in electric ovens, merging new technologies and ancient art. Glass will remain fascinating and homeowners will continue to enjoy beautiful art pieces that double as useful object.
Remember that when you choose your glass door knobs you must also think about the plate or the rosette that will hide the hole in the door. Many finishes are available, for both modern and traditional looks. Pewter rosettes, brass rosettes, some will have a decorative motif and other will have a sleek smooth finish. The rosette can make your knob stand out even more if chosen properly, it can also enhance the antique look of a glass knob.
