How to draw a golden topaz

How to draw 3D gemstones and jewelrly with mixed media on gray paper. Drawing by Marcello Barenghi Support my FACEBOOK page: :) FOLLOW ME ON G : marcellobarenghi FOLLOW ME ON TWITTER: MUSIC: “Black Box In the Ground“ by Dan-O at (“Package“ Licence) FINAL PICTURE: MY DRAWING TOOLS: THIS DRAWING TOOK ME: 3 hours and 10 minutes Realistic drawing of a golden topaz gem, timelapse video of the entire drawing process, mixed media drawing on gray paper by Marcello Barenghi - Italian Art