Ask a Glass Question

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Does glass break if it gets too hot or too cold?
Last Updated: Mar 13, 2024 |
Topics:
- Science
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Views: 98307
What causes the varied purple hues in old glass bottles?
Last Updated: Feb 17, 2025 |
Topics:
- Bottles
- Science
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Views: 47197
What is the origin of the term "glory hole"?
Last Updated: Feb 19, 2024 |
Topics:
- Glass history
- Glassmaking
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Views: 45360
Which ingredients cause glass to fluoresce?
Last Updated: Apr 10, 2024 |
Topics:
- Glass types
- Science
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Views: 27178
Why does Corelle get brittle as it ages?
Last Updated: Apr 09, 2024 |
Topics:
- Conservation
- Kitchenware
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Views: 26426
What can you tell me about the history of purple glass?
Last Updated: Dec 17, 2018 |
Topics:
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Views: 21273
What causes an oily film on glass objects?
Last Updated: Dec 02, 2022 |
Topics:
- Conservation
- Science
|
Views: 15939
Does glass conduct electricity?
Last Updated: Sep 06, 2022 |
Topics:
- Science
- Technical questions
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Views: 14688
What is the history of clear or colorless glass?
Last Updated: Jan 28, 2025 |
Topics:
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Views: 12719
Why would clear glass show a greenish glow under black light?
Last Updated: Nov 23, 2021 |
Topics:
- Glass types
- Science
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Views: 12526
What is slag glass?
Last Updated: Mar 18, 2020 |
Topics:
- Identification
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Views: 11777
Does the library have recipes including the binder for the glass powders in pâte de verre?
Last Updated: Mar 09, 2024 |
Topics:
- Glass art
- Techniques
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Views: 11558
Do you know who made the red glass 1876 Cape Cod collection for AVON?
Last Updated: Mar 19, 2020 |
Topics:
- Identification
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Views: 10804
Can I fuse pieces of glass together by using an acetylene torch?
Last Updated: May 31, 2019 |
Topics:
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Views: 10743
What year was the pattern cornflower made by corning-ware?
Last Updated: Mar 28, 2019 |
Topics:
- Corning Incorporated
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Views: 9564
Could it be said that Fire-King is Pyrex before Pyrex? When did Pyrex start? When did Fire-King start? And when did Glasbake start?
Last Updated: Oct 25, 2023 |
Topics:
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Views: 8538
During which periods of time was Manganese dioxide used to decolorize glass?
Last Updated: Feb 17, 2025 |
Topics:
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Views: 8230
We have an antique glass/metal fire extinguisher which is blown glass with some kind of liquid inside. It is surrounded by a metal encasing with a spring-loaded sharp point on the bottom. We can't find any information on it. Can you help?
Last Updated: Mar 08, 2024 |
Topics:
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Views: 7409
Can old glass be recognized by a metal detector?
Last Updated: Mar 09, 2024 |
Topics:
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Views: 6955
Does colored glass fade?
Last Updated: Apr 09, 2025 |
Topics:
- Conservation
- Science
|
Views: 6425

Do I need to log into the Rakow Library catalog to view materials online?
Last Updated: May 13, 2025 |
Topics:
- Library Information
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Views: 88
Is there a way to know how many units Steuben produced of a particular piece?
Last Updated: Apr 21, 2025 |
Topics:
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Views: 85
How are metal oxides used to color glass?
Last Updated: Apr 09, 2025 |
Topics:
- Glassmaking
- Science
|
Views: 1903
What type of sand is generally used in glassmaking and what is the temperature in the oven throughout the heating and cooling process during glassmaking?
Last Updated: Apr 09, 2025 |
Topics:
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Views: 2200
Does colored glass fade?
Last Updated: Apr 09, 2025 |
Topics:
- Conservation
- Science
|
Views: 6425
Are dishes that have the Pyrex stamp with all capital letters made with borosilicate glass?
Last Updated: Mar 25, 2025 |
Topics:
- Pyrex
|
Views: 2874
When did the studio glass movement start in the United States? Can you show me some early examples?
Last Updated: Feb 18, 2025 |
Topics:
- American Glass
- Studio Glass Movement
|
Views: 359
What can you tell me about Corning's role in making the Palomar mirror?
Last Updated: Feb 18, 2025 |
Topics:
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Views: 824
Could you provide more information on the Blaschka works in your collection?
Last Updated: Feb 18, 2025 |
Topics:
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Views: 156
Could you help me locate information on Louis Comfort Tiffany's work as a stained glass designer?
Last Updated: Feb 18, 2025 |
Topics:
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Views: 157
What is Purple of Cassius?
Last Updated: Feb 18, 2025 |
Topics:
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Views: 486
What is dichroic glass?
Last Updated: Feb 18, 2025 |
Topics:
- Science
|
Views: 2019
Why don't tektites, fulgurites, or obsidian explode when cut or scratched?
Last Updated: Feb 18, 2025 |
Topics:
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Views: 660
How were the bricks removed from the mold for the 200" disk mirror now at Mt. Palomar?
Last Updated: Feb 18, 2025 |
Topics:
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Views: 143
Do you have any information about the Portland Vase replica made by Philip Pargeter?
Last Updated: Feb 18, 2025 |
Topics:
|
Views: 285
What causes the varied purple hues in old glass bottles?
Last Updated: Feb 17, 2025 |
Topics:
- Bottles
- Science
|
Views: 47197
What is today's glass generally made of?
Last Updated: Feb 17, 2025 |
Topics:
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Views: 402
Does the Rakow Library have any information regarding 14th to 15th century glass blowing in Spain?
Last Updated: Feb 17, 2025 |
Topics:
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Views: 118
What would the result be if I were to place flower petals between layers of glass and fused them?
Last Updated: Feb 17, 2025 |
Topics:
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Views: 2586
Can you give me any information on the history of women working in the glass industry?
Last Updated: Feb 17, 2025 |
Topics:
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Views: 453

Do I need to log into the Rakow Library catalog to view materials online?
Last Updated: May 13, 2025 |
Topics:
- Library Information
|
Views: 88
Is the library free and open to the public?
Last Updated: Feb 06, 2025 |
Topics:
- Library Information
|
Views: 353
Can I donate materials to the library?
Last Updated: Nov 21, 2023 |
Topics:
- Library Information
|
Views: 250
Can I borrow a book from your library?
Last Updated: Nov 21, 2023 |
Topics:
- Library Information
|
Views: 270
Do you have the ability to lend Library materials outside the United States?
Last Updated: Mar 07, 2022 |
Topics:
- Library Information
|
Views: 174
How can I find digital materials in the library catalog?
Last Updated: Mar 07, 2022 |
Topics:
- Library Collections
- Library Information
|
Views: 270
Does your library lend microfiche/microfilm?
Last Updated: Mar 02, 2022 |
Topics:
- Library Information
|
Views: 201
Are librarians available to help me with my question?
Last Updated: Dec 13, 2021 |
Topics:
- Library Information
|
Views: 192
What does the Rakow Research Library have in its collections?
Last Updated: Jun 08, 2021 |
Topics:
- Library Information
|
Views: 176
Where can I find a glossary of glass terms?
Last Updated: Apr 30, 2020 |
Topics:
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Views: 242

Please note: The Corning Museum of Glass is a non-profit, educational institute and, as such, cannot answer questions about rarity or value of your glass. For more information about appraisal services, see our curatorial FAQs.

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