It was established in Wick, Caithness, Scotland in 1961 by Robin Sinclair, 2nd Viscount Thurso.
The firm also became well known for supplying the annual trophy for the BBC Mastermind television quiz programme.
Manufacturing was initially solely located in Wick, with a second facility being opened in Oban in 1969 and Perth in 1979.
It was bought (out of receivership) in October 2006 by Dartington Crystal and continues to manufacture and sell glass paperweights.
The factories in Wick, Oban and Perth all closed and were replaced by a smaller operation within the Crieff Visitor Centre.