It's just like an old time mining sluce.

The more you shake it, the more that comes to view.

At the end, you can see the types of rare and beautiful stones you've come up with.

OK..here we go... Start pouring and start shaking.

Ah Ha!! A nugget!!

As you work the sieve with the water pouring down the sluce, the loose sand falls through the bottom of the sieve and the goodies stay on the top.

What a haul of goodies!!