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Important Note

We are excited to welcome you back to the Museum! Advanced tickets are required and are now available for purchase. We are currently opening ticket availability on a rolling basis. Currently, dates extend into August. Visit our Health & Safety page for updates

All About Glass

All About Glass

This is your resource for exploring various topics in glass: delve deeper with this collection of articles, multimedia, and virtual books all about glass. Content is frequently added to the area, so check back for new items. If you have a topic you'd like to see covered, send us your suggestion. If you have a specific question, Ask a Glass Question at our Rakow Research Library.

Weathered Archaeological Glass
Article

Glass is found at archaeological excavations in a variety of conditions. The glass condition can range from pristine, where no deterioration is visible, to so heavily degraded that practically all the glass has been transformed into corrosion products. The deterioration of the glass surface is

Crizzling
Article

The Stages of Crizzling Stage 1: Initial Stage Presence of alkali on the glass gives the surface a cloudy or hazy appearance. Tiny droplets or fine crystals can form if there is high (above 55%) or low (below 40%) relative humidity. Glass may feel slippery or slimy. Washing will remove alkali from