crystal visions - full documentary about crystals and gemstones Published 8 years ago • 878K plays • Length 1:29:55 Download video MP4 Download video MP3 Similar videos 52:52 world's greatest treasure: crystals and gemstones | full documentary 3:58 the history of crystals and gems 2:35 how crystals are structured 1:50 kyanite, chlorite, beryl minerals gemstone identification | mineral, crystals & rock in geology
