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ID: 4099902 pcs
thumb image of 2.3ct Oval Cabochon Smoke Sillimanite Cat's Eye (ID: 409990)
2.31ct Sillimanite Cat's Eye
8.04 x 5.49 x 3.05mm
USD 8.36
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ID: 4103714 pcs
thumb image of 3.8ct Oval Cabochon Smoke Sillimanite Cat's Eye (ID: 410371)
3.76ct Sillimanite Cat's Eye
7.33 x 4.75 x 2.93mm
USD 13.61
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ID: 4103654 pcs
thumb image of 4.3ct Oval Cabochon Smoke Sillimanite Cat's Eye (ID: 410365)
4.26ct Sillimanite Cat's Eye
7.08 x 4.80 x 3.70mm
USD 15.42
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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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ID: 4102052 pcs
thumb image of 3.1ct Oval Cabochon Smoke Sillimanite Cat's Eye (ID: 410205)
3.09ct Sillimanite Cat's Eye
7.48 x 5.42 x 4.24mm
USD 11.19
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ID: 4103432 pcs
thumb image of 2.3ct Oval Cabochon Smoke Sillimanite Cat's Eye (ID: 410343)
2.29ct Sillimanite Cat's Eye
7.24 x 5.39 x 3.59mm
USD 8.29
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ID: 4103482 pcs
thumb image of 2.5ct Oval Cabochon Smoke Sillimanite Cat's Eye (ID: 410348)
2.46ct Sillimanite Cat's Eye
7.30 x 5.18 x 3.83mm
USD 8.91
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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: 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: 4101994 pcs
thumb image of 3.1ct Oval Cabochon Smoke Sillimanite Cat's Eye (ID: 410199)
3.07ct Sillimanite Cat's Eye
6.97 x 4.69 x 3.01mm
USD 11.11
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ID: 4098924 pcs
thumb image of 3.2ct Oval Cabochon Smoke Sillimanite Cat's Eye (ID: 409892)
3.24ct Sillimanite Cat's Eye
6.59 x 4.08 x 3.45mm
USD 11.73
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ID: 4100592 pcs
thumb image of 3ct Oval Cabochon Smoke Sillimanite Cat's Eye (ID: 410059)
2.99ct Sillimanite Cat's Eye
7.40 x 5.20 x 4.36mm
USD 10.82
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ID: 4103744 pcs
thumb image of 4.7ct Oval Cabochon Smoke Sillimanite Cat's Eye (ID: 410374)
4.68ct Sillimanite Cat's Eye
7.51 x 4.96 x 3.65mm
USD 16.94
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ID: 4100602 pcs
thumb image of 2.6ct Oval Cabochon Smoke Sillimanite Cat's Eye (ID: 410060)
2.64ct Sillimanite Cat's Eye
7.70 x 5.05 x 4.15mm
USD 9.56
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ID: 4102932 pcs
thumb image of 1.8ct Oval Cabochon Smoke Sillimanite Cat's Eye (ID: 410293)
1.83ct Sillimanite Cat's Eye
7.08 x 4.78 x 3.06mm
USD 6.62
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ID: 4100792 pcs
thumb image of 2.5ct Oval Cabochon Smoke Sillimanite Cat's Eye (ID: 410079)
2.53ct Sillimanite Cat's Eye
7.82 x 5.53 x 3.23mm
USD 9.16
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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: 4102972 pcs
thumb image of 2ct Oval Cabochon Smoke Sillimanite Cat's Eye (ID: 410297)
2.00ct Sillimanite Cat's Eye
6.87 x 4.54 x 3.52mm
USD 7.24
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ID: 4105721 pcs
thumb image of 3.7ct Oval Cabochon Grayish Brown Sillimanite Cat's Eye (ID: 410572)
3.68ct Sillimanite Cat's Eye
10.27 x 7.60 x 5.88mm
USD 25.76
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ID: 4101802 pcs
thumb image of 3.1ct Oval Cabochon Smoke Sillimanite Cat's Eye (ID: 410180)
3.05ct Sillimanite Cat's Eye
7.87 x 5.90 x 3.87mm
USD 11.04
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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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Note: 1ct = 0.2g

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