Last Updated: Sep 17, 2016     Views: 16

It is best to protect glass from sunlight, particularly since the sun can cause fluctuations of temperature. Changes in heat and cold can stress the glass, resulting in cracks or breakage. Ideally, “temperature and relative humidity [should be kept] within carefully defined parameters.”

Quote from: Davison, Sandra. Conservation and restoration of glass. 2nd ed. Oxford ; Boston : Butterworth-Heinemann, 2003. xii, 380 p., [4] p. of plates. Previous ed. published as: Conservation of glass / Roy Newton. 1989. Includes bibliographical references (p. 349-365) and index. Butterworth-Heinemann series in conservation and museology <nk5104.5 2003="" .n56="">

The American Institute for Conservation of Historic & Artistic Works (AIC) has a good overview, "CARING FOR YOUR CERAMICS AND GLASS OBJECTS" on their website:

They also offer advice and a list to help find a conservator to answer your questions: "GUIDELINES FOR SELECTING A CONSERVATOR"

American Institute for Conservation of Historic & Artistic Works (AIC)
1717 K Street, NW
Suite 200
Washington, DC 20006
Telephone: (202) 452-9545
Facsimile: (202) 452-9328

Another useful professional source: A practical guide to the conservation and care of collections. Edited by David Gilroy and Ian Godfrey. Perth, W.A.: Western Australian Museum, 1998. vii, 181 p. Emphasizes preventive treatment, but discusses some hands-on treatment. Glass, p. 95-101.
I can send the glass pages to you, if they would be useful.

This website gives more information than you need, but it reinforces the idea that a stable environment is important for the care of delicate objects: 



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