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You Selected (248): Sillimanite Sillimanite Cat's Eye, Sillimanite Clear All
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| ID: 4117224 pcs |
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| 4.41 ct Sillimanite |
| 7.8 x 6 mm |
| $ 154.35 |
| Item in Stock |
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| ID: 4118195 pcs |
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| 5.52 ct Sillimanite |
| 7.1 x 5.1 mm |
| $ 193.20 |
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| ID: 4118174 pcs |
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| 4.75 ct Sillimanite |
| 7.1 x 5 mm |
| $ 166.25 |
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| ID: 4117174 pcs |
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| 3.89 ct Sillimanite |
| 7.2 x 5.2 mm |
| $ 136.15 |
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| ID: 4117961 pcs |
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| 0.36 ct Sillimanite |
| 4.1 x 3.9 mm |
| $ 12.60 |
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| ID: 4117254 pcs |
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| 3.48 ct Sillimanite |
| 7 x 5.2 mm |
| $ 121.80 |
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| ID: 4116272 pcs |
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| 3.38 ct Sillimanite |
| 8.1 x 6 mm |
| $ 118.30 |
| Item in Stock |
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| ID: 4117194 pcs |
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| 4.11 ct Sillimanite |
| 8 x 6 mm |
| $ 143.85 |
| Item in Stock |
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| ID: 4117214 pcs |
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| 3.35 ct Sillimanite |
| 6.9 x 5 mm |
| $ 117.25 |
| Item in Stock |
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| ID: 4118185 pcs |
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| 4.31 ct Sillimanite |
| 7 x 5.1 mm |
| $ 150.85 |
| Item in Stock |
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| ID: 4116222 pcs |
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| 3.33 ct Sillimanite |
| 8 x 6.1 mm |
| $ 116.55 |
| Item in Stock |
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| ID: 4118205 pcs |
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| 5.18 ct Sillimanite |
| 6.6 x 4.9 mm |
| $ 181.30 |
| Item in Stock |
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| ID: 4115631 pcs |
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| 1.50 ct Sillimanite |
| 9 x 6.8 mm |
| $ 33.86 |
| Item in Stock |
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| ID: 4112792 pcs |
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| 5.09 ct Sillimanite |
| 10.1 x 8 mm |
| $ 114.88 |
| Item in Stock |
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| ID: 4117234 pcs |
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| 3.49 ct Sillimanite |
| 7 x 5.1 mm |
| $ 122.15 |
| Item in Stock |
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| ID: 4112782 pcs |
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| 5.16 ct Sillimanite |
| 10 x 7.8 mm |
| $ 116.46 |
| Item in Stock |
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| ID: 4118113 pcs |
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| 3.23 ct Sillimanite |
| 7.3 x 5.1 mm |
| $ 113.05 |
| Item in Stock |
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| ID: 4118226 pcs |
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| 4.04 ct Sillimanite |
| 6.1 x 4.2 mm |
| $ 141.40 |
| Item in Stock |
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| ID: 4112732 pcs |
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| 4.88 ct Sillimanite |
| 9 x 7.2 mm |
| $ 110.14 |
| Item in Stock |
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| ID: 4117881 pcs |
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| 0.91 ct Sillimanite |
| 7 x 5 mm |
| $ 31.85 |
| Item in Stock |
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| ID: 4117871 pcs |
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| 1.02 ct Sillimanite |
| 7.6 x 5.7 mm |
| $ 35.70 |
| Item in Stock |
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Sillimanite
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.
Sillimanite gems may show a cat's eye and be cut en cabochon, or they may be faceted, transparent gemstones. The colors of sillimanite include colorless, grayish-white, green, bluish and brownish. A fibrous variety of sillimanite is traded as "fibrolite". Some sillimanite gemstones show pleochroism, which means that several colors may be exhibited in a single gemstone depending on the viewing angle.
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.
Sillimanite gems may show a cat's eye and be cut en cabochon, or they may be faceted, transparent gemstones. The colors of sillimanite include colorless, grayish-white, green, bluish and brownish. A fibrous variety of sillimanite is traded as "fibrolite". Some sillimanite gemstones show pleochroism, which means that several colors may be exhibited in a single gemstone depending on the viewing angle.
