Blown glass may have other seams too. Artists may blow sections and piece them together. Finding seams in a glass vase does not necessarily rule it out as blown glass.

How do you know if glass is hand blown?

A small pinched area around the lip of a vase indicates the spot where blown glass is removed from the blowing tube. A hand-blown glass piece may have slight imperfections, irregularities, or even a slightly asymmetrical form. These irregularities reveal that a human hand produced the pieces, rather than a machine.

Does real glass have seams?

Real crystal edges are sharp and precise, honed and engraved with a designers cutting wheel. Check for seams in the piece as well -- real crystal lacks seams. Pressed glass may have a seam running vertically along the piece from the manufacturing mold.

How can you tell if cut glass is valuable?

The facets on the cut glass will sparkle in the light. The higher the clarity and the more brilliant the piece, the higher the lead content, and many times the more valuable. If possible, listen to the glass. When you gently thump a piece of cut glass, it will ring if it is truly cut glass.

Is Fenton glass always marked?

Yes, Fenton did not start using molded marks in their glass until the 1970s. The majority of Fenton was only marked with a sticker. Most of the stickers have been lost or removed over time.

Is Blenko glass hand-blown?

Blenko Glass Company has been a family owned and operated company since 1893. Exquisite color, skilled craftsmen, and imaginative designs have made Blenko famous in the time-honored craft of hand-blown glass.

Whats the difference between crystal and cut glass?

​Most glasses have sharp cuts, while crystals are rounded, polished and they are cut in a precise manner. Remember that crystals with over 35% lead will actually sparkle. Glass usually has a thicker rim than crystal, as it is made thicker for more durability.

How can you tell if Fenton glass is unmarked?

Identifying Unmarked Pieces. Check the bottom of the glass for a pontil mark, which Fenton doesnt have. Some glass makers use punty rods to hold a glass piece during the crafting process. When its removed, it leaves a mark called a pontil mark.

What color Depression glass is worth the most?

Pink glass is most valuable, followed by blue and green. Rare colors such as tangerine and lavender are also worth more than common colors like yellow and amber.

Is Blenko Glass valuable?

10 Vintage and modern examples of Blenko glassworks are often an affordable option for starting a glass collection. In addition, during auctions in 2017, the prices paid for Blenko glass listed on LiveAuctioneers and Invaluable realized prices of $10 to $700.