One of the interesting surprises I encountered were various habits of hemimorphite from the area around Mfouati. These vividly colored, botryoidal blue examples were one of the more beautiful habits. In many ways, they are nearly identical to the Chinese material from Wenshan, so much so that I even wondered if local Chinese enterprises were shipping the stuff back to China where it was getting mislabeled.
The better examples though, have a more electric color, as this one does.
Sawn on the back-- I spent hours with an electric saw under the Congolese sun, covered in dust (which is a remarkably poor sunblock) sawing specimens down to size for shipment. I really did like this piece though.... the shape and color made it particularly nice.