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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
Anatase
Anatase
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0.21
3.82-3.97
5.5-6
2.488-2.562
Not Available
Not Available
Boleite
Boleite
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0.07
5.05
3-3.5
2.05
Not Available
Not Available
Cordierite Iolite
Cordierite Iolite
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0.02
2.56-2.66
7-7.5
1.542-1.578
Biaxial/+
Not Available
Elbaite
Elbaite
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0.02
2.90-3.10
7
1.614-1.666
Not Available
Not Available
Dravite
Dravite
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0.02
3.03-3.18
7-7.5
1.614-1.666
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
Anhydrite
Anhydrite
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0.01
2.90-2.98
3.5
1.570-1.614
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
Anyolite
Anyolite
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Not Available
3.20-3.50
6-7
1.695
Not Available
Not Available
Cyprine of Berzelius
Cyprine of Berzelius
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Not Available
3.25-3.50
6-7
1.698-1.723
Not Available
Not Available
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