NOVA Season 44 Episode 5
Treasures of the Earth: Gems
Gemstones like diamonds, rubies, opal and jade are the ultimate treasures. Delve into Earth's depths to discover how these precious stones are forged and what explains the unique allure of each captivating gemstone.
44 - 28Killer FloodsOct. 17, 2017- 44 - 27Killer HurricanesOct. 11, 2017
- 44 - 26Killer VolcanoesOct. 04, 2017
- 44 - 25Secrets of the Forbidden CitySep. 27, 2017
- 44 - 24Ghosts of StonehengeAug. 31, 2017
- 44 - 23Secrets of the Shining KnightSep. 20, 2017
- 44 - 22The Origami RevolutionFeb. 15, 2017
- 44 - 21Day the Dinosaurs DiedDec. 27, 2017
- 44 - 20Bird BrainDec. 20, 2017
- 44 - 19Extreme Animal WeaponsNov. 22, 2017
- 44 - 18Eclipse Over AmericaAug. 23, 2017
- 44 - 17Poisoned WaterMay. 31, 2017
- 44 - 16Chinese Chariot RevealedMay. 17, 2017
- 44 - 15Building Chernobyl's MegatombApr. 26, 2017
- 44 - 14Holocaust Escape TunnelApr. 19, 2017
- 44 - 13Why Trains CrashFeb. 22, 2017
- 44 - 12Death Dive to SaturnFeb. 15, 2017
- 44 - 11Ultimate Cruise ShipFeb. 08, 2017
- 44 - 10Search for the Super BatteryFeb. 01, 2017
- 44 - 9The Nuclear OptionJan. 11, 2017
- 44 - 8Secrets of the Sky TombsJan. 04, 2017
- 44 - 7Treasures of the Earth: PowerNov. 16, 2016
- 44 - 6Treasures of the Earth: MetalsNov. 09, 2016
- 44 - 5Treasures of the Earth: GemsNov. 02, 2016
- 44 - 4Super TunnelOct. 12, 2016
- 44 - 3Great Human OdysseyOct. 05, 2016
- 44 - 2School of the FutureSep. 14, 2016
- 44 - 115 Years of TerrorSep. 07, 2016
