Have you ever wondered what separates an ordinary carnival glass dish from a top seller? The world of collectible glassware is vast and varied, filled with countless beautiful pieces, each with its ...

If there is a single material that plays an ornamental role in almost every home in America, it is glass. We all have some, whether in artwork, bowls, drinking vessels, pitchers, statuary, vases or a ...

Low-cost molded or pressed glass with an iridescent finish had many names in the very early 20th century. First sold as inexpensive molded and pressed decorative wares, at a time when fine glass was ...

Dear Helaine and Joe: My beautiful 93-year-old auntie gave me this bowl that was her mother’s. It is marked on the bottom with either an “N” or a “Z” in a circle. Can you provide some information on ...

Vintage glassware is flying off shelves and breaking auction records like never before. From delicate Depression glass to colorful carnival glass, collectors are paying top dollar for pieces once ...

Q: Enclosed is a picture of a set that belonged to my mother, and before her, to my grandmother. Inside some of the pieces is the symbol “Z1.” I was wondering if you could tell me the name of this ...