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ID: 4105751 pcs
thumb image of 1.9ct Oval Cabochon Grayish Brown Sillimanite Cat's Eye (ID: 410575)
1.91ct Sillimanite Cat's Eye
8.87 x 5.77 x 4.31mm
USD 13.37
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ID: 4105761 pcs
thumb image of 1.8ct Oval Cabochon Grayish Brown Sillimanite Cat's Eye (ID: 410576)
1.84ct Sillimanite Cat's Eye
7.72 x 5.79 x 4.57mm
USD 12.88
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ID: 4101752 pcs
thumb image of 1.9ct Oval Cabochon Smoke Sillimanite Cat's Eye (ID: 410175)
1.91ct Sillimanite Cat's Eye
7.81 x 5.54 x 2.91mm
USD 6.91
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ID: 4105941 pcs
thumb image of 2.2ct Oval Cabochon Grayish Brown Sillimanite Cat's Eye (ID: 410594)
2.23ct Sillimanite Cat's Eye
9.25 x 5.90 x 4.79mm
USD 15.61
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ID: 4100712 pcs
thumb image of 2ct Oval Cabochon Smoke Sillimanite Cat's Eye (ID: 410071)
1.98ct Sillimanite Cat's Eye
7.51 x 5.05 x 3.14mm
USD 7.17
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ID: 4104264 pcs
thumb image of 4.5ct Oval Cabochon Smoke Sillimanite Cat's Eye (ID: 410426)
4.49ct Sillimanite Cat's Eye
7.14 x 4.66 x 4.13mm
USD 16.25
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ID: 4100822 pcs
thumb image of 2.4ct Oval Cabochon Smoke Sillimanite Cat's Eye (ID: 410082)
2.38ct Sillimanite Cat's Eye
7.14 x 4.84 x 3.63mm
USD 8.62
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ID: 4105691 pcs
thumb image of 4ct Oval Cabochon Grayish Brown Sillimanite Cat's Eye (ID: 410569)
4.00ct Sillimanite Cat's Eye
10.38 x 7.31 x 6.10mm
USD 28.00
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ID: 4107541 pcs
thumb image of 1.9ct Oval Cabochon Grayish Brown Sillimanite Cat's Eye (ID: 410754)
1.88ct Sillimanite Cat's Eye
8.94 x 6.53 x 3.86mm
USD 13.16
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ID: 4098964 pcs
thumb image of 3.5ct Oval Cabochon Smoke Sillimanite Cat's Eye (ID: 409896)
3.45ct Sillimanite Cat's Eye
7.16 x 4.93 x 2.91mm
USD 12.49
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ID: 4102912 pcs
thumb image of 3ct Oval Cabochon Smoke Sillimanite Cat's Eye (ID: 410291)
2.95ct Sillimanite Cat's Eye
8.35 x 4.85 x 3.72mm
USD 10.68
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ID: 4105961 pcs
thumb image of 2.9ct Oval Cabochon Grayish Brown Sillimanite Cat's Eye (ID: 410596)
2.87ct Sillimanite Cat's Eye
8.72 x 6.39 x 5.70mm
USD 20.09
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ID: 4099682 pcs
thumb image of 2.3ct Oval Cabochon Smoke Sillimanite Cat's Eye (ID: 409968)
2.29ct Sillimanite Cat's Eye
6.63 x 4.45 x 4.10mm
USD 8.29
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ID: 4107531 pcs
thumb image of 1.9ct Oval Cabochon Grayish Brown Sillimanite Cat's Eye (ID: 410753)
1.89ct Sillimanite Cat's Eye
9.04 x 5.80 x 4.12mm
USD 13.23
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ID: 4106321 pcs
thumb image of 3.5ct Oval Cabochon Greenish Brown Sillimanite Cat's Eye (ID: 410632)
3.46ct Sillimanite Cat's Eye
9.18 x 7.34 x 5.48mm
USD 24.22
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ID: 4101984 pcs
thumb image of 3.6ct Oval Cabochon Smoke Sillimanite Cat's Eye (ID: 410198)
3.63ct Sillimanite Cat's Eye
7.05 x 4.37 x 3.39mm
USD 13.14
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ID: 4106001 pcs
thumb image of 3.9ct Oval Cabochon Grayish Brown Sillimanite Cat's Eye (ID: 410600)
3.92ct Sillimanite Cat's Eye
10.64 x 7.83 x 5.36mm
USD 27.44
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ID: 4099882 pcs
thumb image of 2.4ct Oval Cabochon Smoke Sillimanite Cat's Eye (ID: 409988)
2.42ct Sillimanite Cat's Eye
7.25 x 5.35 x 3.79mm
USD 8.76
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ID: 4102982 pcs
thumb image of 2.9ct Oval Cabochon Smoke Sillimanite Cat's Eye (ID: 410298)
2.91ct Sillimanite Cat's Eye
8.11 x 5.33 x 3.81mm
USD 10.53
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ID: 4382491 pcs
thumb image of 2.1ct Oval Cabochon Greenish Brown Sillimanite Cat's Eye (ID: 438249)
2.09ct Sillimanite Cat's Eye
8.22 x 5.99 x 4.86mm
USD 14.63
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ID: 4106021 pcs
thumb image of 4ct Oval Cabochon Grayish Brown Sillimanite Cat's Eye (ID: 410602)
4.01ct Sillimanite Cat's Eye
10.65 x 7.99 x 5.56mm
USD 28.07
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Sillimanite Cat's Eye
Sillimanite is an aluminum silicate, related to both andalusite and kyanite. In fact these three minerals are polymorphs - they share the same chemical composition but different crystal structures.

Sillimanite is named after the American chemist Benjamin Silliman (1779-1864). Silliman was one of the first American professors of science and taught at Yale University.
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Size and Weight

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Note: 1ct = 0.2g

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