Added: Jul 18, 2008
From: vincefieldgemology
Duration: 0:42
At the Ruvuma river, the natural border between Tanzania and Mozambique, a group of miners is mining for alluvial rubies, sapphires, alexandrites and diamonds... while gemologist Richard W. Hughes is fighting against nasty flies.
Channel: Education
Tags: alexandrite gemology mine mining sapphire tanzania tunduru
Rating: ( ratings) Views: Comments: 0
