Stein is known for her jewelry made using plastic and combined in innovative ways. She trained as an artist as a young girl and worked in the textile industry starting in 1957, and by 1965 she was working with her chemist husband, Ferdinand Steinberger, to develop a process of layering thin sheets of plastic to make the multi-colored and textured plastics for which she is known. Her jewelry is made in two periods, as she stopped producing for a time: 1969 – 1981 and 1991 to the present.

We have 3 objects that Lea Stein has been involved with.

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<ref name=CH>{{cite web |url=https://collection.cooperhewitt.org/people/69187135/ |title=Lea Stein |author=Cooper Hewitt, Smithsonian Design Museum |accessdate=23 April 2019 |publisher=Smithsonian Institution}}</ref>