In the second photo, about halfway down the image vertically, and 1/5th the width from the right-hand edge, there's a cluster of very tiny euhedral elongated crystals visible, but the magnification is not sufficient to provide stronger evidence of the species.  It does look like dioptase.  An image of this area of the specimen shot through a handheld 10x loupe may be enough for conclusive identification.

Note that many digitally captured images of dioptase give the appearance of the mineral as being more teal or blue than it appears to the human eye--this is well-documented as a photographic challenge (you can find the thread somewhere in the photography forum here).  So the color here is not in contradiction to the claimed species.  Moreover, it is also known that smaller/druzy crystals of dioptase can be very light in color.

That said, a precise locality is probably impossible to state.  Dioptase is relatively common and there are many localities worldwide, especially if the crystals are small as in this case.  The largest crystals are found in the more famous African mines around Tsumeb and Shinkolobwe, as well as the type locality Altyn-Tyube.  But given that these are such small crystals, in a way this almost excludes these localities as candidates.  Of course, that is not to say that the specimen is less interesting or aesthetic, since an example from a rare locality can be highly coveted, especially for collectors of this species.  (Fluorite, pyromorphite, and wulfenite are also examples of species that some collectors enjoy specializing in.)