Nathalie- I've cast a bunch of pure silver over the years.
No special tricks or equipment necessary. Treat it pretty much like
The only thing that is different is that pure silver is quite soft
so your design must take that into consideration.
Fine delicate details won't last forever on a pure silver ring that
is worn every day. Polishing compound likes to stick to it like pure
gold so a light tumbling is helpful.
Have fun and make lots of jewelry.