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| Source: | YouTube |
|---|---|
| Added: | 5 years ago |
| Tags: | tanzania, corundum, ruby, sapphire, gems, africa, artisanal |
| Categories: | Library |
| Description: | When the miners reach the gem rich gravel layer they start to collect it and wash it directly in the mine pit. They created in the deep of the pit a small washing pond. More details on www.fieldgemology.org |
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