Lavinite (Polish: Lawinit) is a mixture of metal particles (usually iron) and sand held together by solidified molten sulfur.
Henker produced decorative items from lavinite such as vases, candlesticks, lamps, chandeliers and rosettes as well as letters and advertising signs.
[2] In 1922, Kunststein-Industrie W. Henker & Co opened a sales office in New York City and lavinite became very popular in the United States.
Over time, the assortment was expanded by items referring to the history of Poland, such as busts of Prince Józef Poniatowski or Adam Mickiewicz.
The biggest collection of them, comprising 63 items, is in the Muzeum Ziemi Kujawskiej i Dobrzyńskiej in Włocławek.