At the September 2010 Mini-Guinea camp in Singapore, Li Ho brought two stone djembes. He manufactures them himself. They are made of ground stone, with a binder to hold the stuff together. There was a large language barrier, so I couldn't quite figure out what he used as a binder. As best as I can tell, the binder is not a resin, but something more like concrete or some such. There is also some fabric inside, so the material is somewhat similar to fibrous concrete.
At any rate, he asked Mamady to play one of these djembes and to comment. Mamady said the sound was good but made suggestions for altering the shape. He said that the djembe should be a bit taller (the one he tried was about 56cm high, about 4cm short of the normal height), that the waist should be a bit wider, and that the foot should flare a bit more.
To my ears, that drum sounded bloody nice. If I hadn't known better, I would have said that this is most likely a small-headed Burkina djembe with a thick skin.
The drums appear extremely durable. I'm sure that they won't break easily. And, of course, being made of stone, they are impervious to changes in humidity.
Li Ho is from China and interested in finding alternatives for djembes that avoid chopping down innumerable trees. His website is
www.zebradjembe.com (Chinese only).
I've attached two images and a sound clip of Mamady playing that drum below.
Cheers,
Michi.

- Stone djembe
- IMG_0018.jpg (1.31 MiB) Viewed 612 times

- Stone djembe - interior
- IMG_0025.JPG (1.36 MiB) Viewed 612 times
Stone_djembe.mp3
- Mamady testing the stone djembe
- (934.23 KiB) Downloaded 105 times