Gwynant Valley Minerals was primarily a mail order dealer but had a small shop and operations located in Beddgelert, Gwynedd, Wales, UK.
The business was the brainchild of Ernie Pickard a mineral collector and then dealer from 1970's until he died in 1999.
His catalogues/lists were all typed out posted periodically and ended just before the internet took over.
His labels survive in many collections put together in the period.
His stock was a combination of mostly worldwide material, though UK of course figured.