Three Precious Gems: Rubies, Emeralds, Sapphires
Viewers discover the rich history of rubies, emeralds and sapphires, and gain valuable insight into today's mining, cutting and grading techniques. Join gemologists, historians, authors and experts for the extraordinary adventure into the world of these rare and beautiful gemstones.
Видео Three Precious Gems: Rubies, Emeralds, Sapphires канала JTV Live Now
Видео Three Precious Gems: Rubies, Emeralds, Sapphires канала JTV Live Now
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