Hyperrealistic speed drawing of a ruby

http://www.marcellobarenghi.com
MUSIC: "A small for all" by CinqueQuarti please feel free to visit http://audiojungle.net/user/Cinquequarti

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FINAL PICTURE:
http://www.marcellobarenghi.com/2014/03/a-scratched-ruby-drawing.html

DRAWING TOOLS:
http://www.marcellobarenghi.com/p/materials-used-for-my-drawing-video-on.html
I also used my old airbrush for doing some shadows

THIS DRAWING TOOK ME:
3 hours and 27 minutes

How to draw a ruby gemstone with mixed media on gray paper - hyperrealistic speed drawing by Marcello Barenghi - Italian Art.