Glassworks, founded by glassmaker Frantisek Kavalír (d.1853) in Sázara. Kavalír intended to use hard potash-lime glass that he had developed for containers for pharmacies and laboratories, in the factory's production. Firm taken over by son Josef (d.1903), who opened a second workshop in Sázara in 1884. Josef's son Vladimir later took over firm, which met with difficulty at outbreak of World War I and also the death of Vladimir in 1919. By the 1970s the factories were modernized, and after 1989 heat-resistant household glassware became main production.

We have 10 objects that Kavalier Glassworks has been involved with.

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<ref name=CH>{{cite web |url=https://www-6.collection.cooperhewitt.org/people/18539029/ |title=Kavalier Glassworks |author=Cooper Hewitt, Smithsonian Design Museum |accessdate=5 December 2021 |publisher=Smithsonian Institution}}</ref>