Treasures of the Earth: Gems
Treasures of the Earth: Gems. Delve into Earth's depths to discover how precious gemstones like diamonds and rubies are forged.
- Sunday, September 22 from 11:00 a.m. - 12:00 p.m. on OPB TV
- Tuesday, October 8 from 7:00 p.m. - 8:00 p.m. on OPB PLUS
- Wednesday, October 9 from 5:00 a.m. - 6:00 a.m. on OPB PLUS