Anyone know if this is 999 silver?

I've had this medallion for some time, but I want to verify that it is 999 silver. Anyone here have any ideas?

One side has an image of the Hindu Goddess Durga riding on the back of a tiger:




The reverse has on Om symbol and has 999 stamped on it:




It measures 3.2 cm's across

Thanks

 

If you've got access to a below balance weighing scale... or a friendly laboratory that can weigh your coin above and below water.... that will give you a specific gravity reading.

Short of that get it to a jeweler with an xrf machine
http://forums.silverstackers.com/topic-20610-best-scale-for-doing-specific-gravity.html

 

Try a neodymium magnet test, plenty of vids on youtube, this will find out if the coin has a high silver content. It works too as I now use this to test all the coins I purchase, I did post a written method on here somewhere but cannot find it.