Heat Treating Montana Sapphire
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Speaking of Stones: Eyeball Agates of Black Hills.
1:07:07
Sapphires From Montana - A Historical, Geological, and Gemological Overview
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Abandoned Mine Site Explore Shaft Foundations Carbide Can Graveyard Northwestern Ontario
28:44
Finding Sapphires at Two Sapphire Mines in Montana
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I cut the Montana Sapphire that my daughter found after getting it heat treated
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Sapphire Mining Adventure at Gem Mountain, Montana!
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Sapphire Mining at Rock Creek, Montana
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