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3.81 ct Yellow Sillimanite, 9 x 6.9 mm Oval Cut From Sri Lanka, Photo A

3.81 ct Yellow Sillimanite, 9 x 6.9 mm Oval Cut From Sri Lanka

Sillimanite

3.81ct total2 pcs
$ 94.59
9 x 6.9 mm
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3.31 ct Yellow Sillimanite, 8.9 x 7 mm Oval Cut From Sri Lanka, Photo A

3.31 ct Yellow Sillimanite, 8.9 x 7 mm Oval Cut From Sri Lanka

Sillimanite

3.31ct total2 pcs
$ 74.71
8.9 x 7 mm
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4.57 ct Yellow Sillimanite, 8.9 x 6.9 mm Oval Cut From Sri Lanka, Photo A

4.57 ct Yellow Sillimanite, 8.9 x 6.9 mm Oval Cut From Sri Lanka

Sillimanite

4.57ct total2 pcs
$ 103.14
8.9 x 6.9 mm
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3.15 ct Yellow Sillimanite, 8.9 x 6.7 mm Oval Cut From Sri Lanka, Photo A

3.15 ct Yellow Sillimanite, 8.9 x 6.7 mm Oval Cut From Sri Lanka

Sillimanite

3.15ct total2 pcs
$ 78.21
8.9 x 6.7 mm
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3.65 ct Yellow Sillimanite, 8 x 6.1 mm Oval Cut From Sri Lanka, Photo A

3.65 ct Yellow Sillimanite, 8 x 6.1 mm Oval Cut From Sri Lanka

Sillimanite

3.65ct total2 pcs
$ 90.62
8 x 6.1 mm
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1.55 ct Yellow Sillimanite, 8.1 x 6.2 mm Oval Cut From Sri Lanka, Photo A

1.55 ct Yellow Sillimanite, 8.1 x 6.2 mm Oval Cut From Sri Lanka

Sillimanite

1.55ct1 pc
$ 59.68
8.1 x 6.2 mm
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2.03 ct Yellow Sillimanite, 9.8 x 7.7 mm Oval Cut From Sri Lanka, Photo A

2.03 ct Yellow Sillimanite, 9.8 x 7.7 mm Oval Cut From Sri Lanka

Sillimanite

2.03ct1 pc
$ 50.40
9.8 x 7.7 mm
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2.47 ct Yellow Sillimanite, 8 x 6.1 mm Oval Cut From Sri Lanka, Photo A

2.47 ct Yellow Sillimanite, 8 x 6.1 mm Oval Cut From Sri Lanka

Sillimanite

2.47ct total2 pcs
$ 95.10
8 x 6.1 mm
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3.44 ct Yellow Sillimanite, 8.9 x 6.9 mm Oval Cut From Sri Lanka, Photo A

3.44 ct Yellow Sillimanite, 8.9 x 6.9 mm Oval Cut From Sri Lanka

Sillimanite

3.44ct total2 pcs
$ 85.40
8.9 x 6.9 mm
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3.23 ct Yellow Sillimanite, 7.3 x 5.1 mm Oval Cut From Sri Lanka, Photo A

3.23 ct Yellow Sillimanite, 7.3 x 5.1 mm Oval Cut From Sri Lanka

Sillimanite

3.23ct total3 pcs
$ 124.36
7.3 x 5.1 mm
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1.69 ct Yellow Sillimanite, 8 x 5.9 mm Oval Cut From Sri Lanka, Photo A

1.69 ct Yellow Sillimanite, 8 x 5.9 mm Oval Cut From Sri Lanka

Sillimanite

1.69ct1 pc
$ 65.07
8 x 5.9 mm
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2.08 ct Yellow Sillimanite, 8.6 x 6.8 mm Oval Cut From Sri Lanka, Photo A

2.08 ct Yellow Sillimanite, 8.6 x 6.8 mm Oval Cut From Sri Lanka

Sillimanite

2.08ct1 pc
$ 51.65
8.6 x 6.8 mm
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3.06 ct Yellow Sillimanite, 8 x 6.1 mm Oval Cut From Sri Lanka, Photo A

3.06 ct Yellow Sillimanite, 8 x 6.1 mm Oval Cut From Sri Lanka

Sillimanite

3.06ct total2 pcs
$ 117.81
8 x 6.1 mm
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2.07 ct Yellow Sillimanite, 8 x 5.9 mm Oval Cut From Sri Lanka, Photo A

2.07 ct Yellow Sillimanite, 8 x 5.9 mm Oval Cut From Sri Lanka

Sillimanite

2.07ct total2 pcs
$ 72.45
8 x 5.9 mm
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1.22 ct Yellow Sillimanite, 7.1 x 5 mm Oval Cut From Sri Lanka, Photo A

1.22 ct Yellow Sillimanite, 7.1 x 5 mm Oval Cut From Sri Lanka

Sillimanite

1.22ct1 pc
$ 46.97
7.1 x 5 mm
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2.09 ct Yellow Sillimanite, 8.5 x 6.7 mm Oval Cut From Sri Lanka, Photo A

2.09 ct Yellow Sillimanite, 8.5 x 6.7 mm Oval Cut From Sri Lanka

Sillimanite

2.09ct1 pc
$ 51.89
8.5 x 6.7 mm
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2.35 ct Yellow Sillimanite, 10 x 7.7 mm Oval Cut From Sri Lanka, Photo A

2.35 ct Yellow Sillimanite, 10 x 7.7 mm Oval Cut From Sri Lanka

Sillimanite

2.35ct1 pc
$ 58.34
10 x 7.7 mm
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2.01 ct Yellow Sillimanite, 8.9 x 6.7 mm Oval Cut From Sri Lanka, Photo A

2.01 ct Yellow Sillimanite, 8.9 x 6.7 mm Oval Cut From Sri Lanka

Sillimanite

2.01ct1 pc
$ 49.91
8.9 x 6.7 mm
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2.91 ct Yellow Sillimanite, 7.1 x 5.1 mm Oval Cut From Sri Lanka, Photo A

2.91 ct Yellow Sillimanite, 7.1 x 5.1 mm Oval Cut From Sri Lanka

Sillimanite

2.91ct total3 pcs
$ 112.04
7.1 x 5.1 mm
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2.32 ct Yellow Sillimanite, 9.1 x 7.1 mm Oval Cut From Sri Lanka, Photo A

2.32 ct Yellow Sillimanite, 9.1 x 7.1 mm Oval Cut From Sri Lanka

Sillimanite

2.32ct1 pc
$ 57.60
9.1 x 7.1 mm
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2.63 ct Yellow Sillimanite, 5.7 x 4.1 mm Oval Cut From Sri Lanka, Photo A

2.63 ct Yellow Sillimanite, 5.7 x 4.1 mm Oval Cut From Sri Lanka

Sillimanite

2.63ct total5 pcs
$ 101.26
5.7 x 4.1 mm
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1.13 ct Yellow Sillimanite, 7.9 x 5.9 mm Oval Cut From Sri Lanka, Photo A

1.13 ct Yellow Sillimanite, 7.9 x 5.9 mm Oval Cut From Sri Lanka

Sillimanite

1.13ct1 pc
$ 43.51
7.9 x 5.9 mm
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1.4 ct Yellow Sillimanite, 8 x 6 mm Oval Cut From Sri Lanka, Photo A

1.4 ct Yellow Sillimanite, 8 x 6 mm Oval Cut From Sri Lanka

Sillimanite

1.40ct1 pc
$ 53.90
8 x 6 mm
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4.04 ct Yellow Sillimanite, 6.1 x 4.2 mm Oval Cut From Sri Lanka, Photo A
Click for Product Video (411822)

4.04 ct Yellow Sillimanite, 6.1 x 4.2 mm Oval Cut From Sri Lanka

Sillimanite

4.04ct total6 pcs
$ 155.54
6.1 x 4.2 mm
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3.12 ct Yellow Sillimanite, 6.9 x 5 mm Oval Cut From Sri Lanka, Photo A
Click for Product Video (411815)

3.12 ct Yellow Sillimanite, 6.9 x 5 mm Oval Cut From Sri Lanka

Sillimanite

3.12ct total3 pcs
$ 120.12
6.9 x 5 mm
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5.52 ct Yellow Sillimanite, 7.1 x 5.1 mm Oval Cut From Sri Lanka, Photo A
Click for Product Video (411819)

5.52 ct Yellow Sillimanite, 7.1 x 5.1 mm Oval Cut From Sri Lanka

Sillimanite

5.52ct total5 pcs
$ 212.52
7.1 x 5.1 mm
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3.94 ct Yellow Sillimanite, 8.1 x 6.1 mm Oval Cut From Sri Lanka, Photo A

3.94 ct Yellow Sillimanite, 8.1 x 6.1 mm Oval Cut From Sri Lanka

Sillimanite

3.94ct total2 pcs
$ 97.82
8.1 x 6.1 mm
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3.32 ct Yellow Sillimanite, 8.9 x 7.1 mm Oval Cut From Sri Lanka, Photo A

3.32 ct Yellow Sillimanite, 8.9 x 7.1 mm Oval Cut From Sri Lanka

Sillimanite

3.32ct total2 pcs
$ 82.42
8.9 x 7.1 mm
View Details
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3.35 ct Yellow Sillimanite, 6.9 x 5 mm Oval Cut From Sri Lanka, Photo A

3.35 ct Yellow Sillimanite, 6.9 x 5 mm Oval Cut From Sri Lanka

Sillimanite

3.35ct total4 pcs
$ 128.98
6.9 x 5 mm
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4.32 ct Yellow Sillimanite, 9.1 x 7.2 mm Oval Cut From Sri Lanka, Photo A

4.32 ct Yellow Sillimanite, 9.1 x 7.2 mm Oval Cut From Sri Lanka

Sillimanite

4.32ct total2 pcs
$ 107.25
9.1 x 7.2 mm
View Details
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3.03 ct Yellow Sillimanite, 7 x 5 mm Oval Cut From Sri Lanka, Photo A

3.03 ct Yellow Sillimanite, 7 x 5 mm Oval Cut From Sri Lanka

Sillimanite

3.03ct total4 pcs
$ 116.66
7 x 5 mm
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1.63 ct Yellow Sillimanite, 8.8 x 6.6 mm Oval Cut From Sri Lanka, Photo A

1.63 ct Yellow Sillimanite, 8.8 x 6.6 mm Oval Cut From Sri Lanka

Sillimanite

1.63ct1 pc
$ 40.47
8.8 x 6.6 mm
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Photos are of Actual Products for Sale

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.

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