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Gems Found In Africa
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Optic Character


Clarity


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31 Gemstones Found
Gemstones
Dispersion
Specific Gravity
Mohs Hardness
Refractive Index
Optic Character
Talisman
Transvaal Jade
Transvaal Jade
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0.03
3.55-3.73
7-7.5
Not Available
Not Available
Not Available
Umbalite
Umbalite
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0.02
3.62-4.33
7-7.5
1.730-1.820
Not Available
Not Available
Axinite
Axinite
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0.02
3.26-3.36
6.5-7
1.656-1.704
Biaxial/+
Not Available
Amblygonite
Amblygonite
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0.01
2.98-3.10
6
1.578-1.646
Biaxial/+
Not Available
Aquamarine
Aquamarine
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0.01
2.66-2.80
7.5-8
1.570-1.592
Not Available
Not Available
Beryl
Beryl
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0.01
2.60-2.90
7.5-8
1.560-1.604
Not Available
Not Available
Amethyst
Amethyst
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0.01
2.65
7
1.544-1.553
Not Available
Not Available
Bytownite
Bytownite
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0.01
2.72-2.75
6-6.5
1.561-1.583
Not Available
Not Available
Bertrandite
Bertrandite
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Not Available
2.59-2.60
6-7
1.583-1.614
Not Available
Not Available
Azurmalachite
Azurmalachite
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Not Available
3.70-3.95
3.5-4
1.655-1.909
Biaxial/+
Not Available
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