How to Identify Blenko Glass

Blenko glass has been occupying the glass industry since 1921. They are the best in the market, and for this reason, there many deceitful companies who replicate their designs and then sell them in the market under the same name tag. This creates a dilemma in the mind of the buyers, and they get easily deceived. For this reason, today, we will discuss some easy tricks on how to identify Blenko glass. This will surely help you to buy the best Blenko glass product

How to Identify Blenko Glass
How to Identify Blenko Glass


There are a few things you need to know in order to identify Blenko glass. The company’s signature mark is the first thing to look for. You can find this easily on the Blenko glass company’s official website. Another thing to look for is a hologram. Before making a purchase, be sure to compare both the signature mark and the hologram. Keep in mind that only 10% of Blenko glass carries the company’s signature mark.

So you can also identify the glass via other processes. You should always seek the tooling marks in the glass. This is much necessary because the Blenko glass is a hundred percent handmade, so there will surely be tooling patterns. You can also check for bubbles and striations. This will also indicate that the product is hand made.

Another thing that you should judge is the absence of mold lines. Though Blenko glass is blown in a wooden mold, it is correctly spun after it is taken out of the mold. This process makes the mold lines smooth.

Next, you must verify the bottom marking of the glass. There will surely be a pontil mark on the bottom of the glass. This is essential because after blowing the glass, an iron rod is attached to the glass’s base, and the object is given a proper shape. After the iron rod is detached, there remains a rough outline, and it is not polished intentionally by the company. This mark makes the product aesthetic, and it proves the authenticity of Blenko glass. So you will still feel a rough or sharp edge at the bottom of a real Blenko glass product.

verify the bottom marking of the glass

When observing Blenko glass, you’ll notice the transparency of the glass – a result of the entirely handcrafted production process. There is no opacity on the surface, which you can confirm by holding the glass up to the light. By doing this, you can quickly identify a good quality Blenko glass.

Frequently Asked Questions

Is Blenko Glass Valuable?

Blenko glass is a type of glassware that Blenko Enterprises made. It is hand-blown and can be used for decorative purposes and functional uses such as serving food or beverages.

It has been around since 1922 and has been widely accepted in the United States and Canada.

Blenko glass has increased in value due to its popularity, with pieces fetching hundreds of dollars at auction sales, but it remains an affordable collectible item for most people.

What kind of glass is Blenko?

Blenko is a type of glass that is made by heating sand to a very high temperature and adding soda ash to it. The glass is then cooled down and cut into shapes.

It has been known for its use in making high-quality wine glasses as well as other vessels like tumblers, decanters, pitchers, vases, and bowls.

Is Blenko Glass Hand-blown?

Blenko Glass is a type of glass that is handmade in the United States. The process of making Blenko Glass starts with a furnace heating sand to 1500 degrees Celsius. Once the sand is heated, soda ash (sodium carbonate) is added to the molten glass. The molten glass is then cooled down and cut into shapes using a blowtorch.

It has been known for its use in making high-quality wine glasses as well as other vessels like tumblers, decanters, pitchers, vases, and bowls.

Using a Blowtorch

Is Culver Glass Always Signed?

Yes, Culver glass is always signed. It is a sign of quality and prestige. Culver glass has been made since 1793 in the same family-owned company that still makes it today.


In conclusion, we would like to express our heartfelt gratitude to the readers. We hope that the tips we have shared here will surely help you identify the best Blenko glass apparatus. This process will make the beginners quickly get hold of good quality glassware, and there is much less possibility of getting deceived while buying such products. Thank you for your precious time. Have a nice day!

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