Gemmological publications/magazines

I would be interested to know what gemmologists or people
interested in gemmology (probably most jewellers to a greater or
lesser extent, depending on how often they utilize gem materials
in their designs) consider to be good publications or
periodicals on gemmology. Gems & Gemology, Journal of Gemmology,
Canadian Gemmologist and Australian Gemmologist are well known,
but are there others that people have come across and would
recommend ? Just interested. I know that there are some good
ones such as ‘Lapis’ around, unfortunately my German is awful,
so English examples would be preferable, but not necessarily
compulsory. Never know, there could be something really good
around that has escaped my/our attention !!

Thanks - Nick