Safe silver electroplating solutions

Are there any practical, sane and safe solutions that can be used for silver elctroplating/electrolysis that are purchasable?


Objective is to create silver crystals, but without having evil cyanide floating around the house... copper I can handle with copper sulphate. Silver has me stuck...


Any ideas?




I've never tried to grow big crystals or anything, but we commonly use 30 mM silver nitrate in 1 M $\ce{NH4OH}$ for electrodepositing silver onto metal (usually gold) electrodes.
If you don't care what kind of surface finish you end up with, it will work, but it makes a fairly rough film that can be somewhat easily removed with abrasion.
The tricky part is trying to get very smooth and adherent films.
It [seems](http://www2.bren.ucsb.edu/~dturney/port/papers/Modern%20Electroplating/05.pdf) that there are still not any good replacements for electroplating from cyanide-containing solutions, for decorative or engineering purposes where the deposit will be subject to wear or has to look nice.


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