There really isn’t too much to be said of this creative artwork, as it is quite simple in principle as a "collage" of stones.
Needless to say, any number of pictures can be assembled using a variety of stones.
As a very cheap art medium, available at your local beach, this type of creative venture definitely has the potential to be the subject of an art class field trip for students of any age.
My only regret in finding this trend is that I was unable to find the name of the artist who created the Stoned Face featured in the picture shown here.
The other art pieces also came from organic Google image searches.
Organic Beach Portraits
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Futuristic Documentary Series
Solar-Powered Refugee Camps
Classic Flax-Hued Sneakers