Topaz in pegmatite of granite. The part of the transparent about the center in the left poto is topaz. Black parts are black quartzs.
White parts are orthociase crystals.
These ones from 1 to about 3 centimeters in length can be found in the gravel and sand in the river. It is possible to find them from among pegmatite of granite. Among pegmatite of granite. Pyramid shape in central is fluorite crystal. In pegmatite of granite, you can find this one.