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 ...

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 ...

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 ...

vintage marigold carnival glasses with price tags - Adrienne Bresnahan/Getty Images Browsing your local secondhand shop is a great way to score unique, rare, and valuable items at unbelievably low ...

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 ...

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 ...

In the 1930s, small colorful glass dishes were given away as premiums for purchasing sacks of flour or boxes of oatmeal or detergent. Well padded in the flour, a sturdy glass cup or bowl would survive ...