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You Selected (328): Sillimanite - Cat's Eye Sillimanite Clear All
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0.8ct Oval Facet Green Yellow Sillimanite Gem (ID: 411687)
0.77 ct Sillimanite
6 x 5.8 mm
$ 26.95
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4 pcs
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1ct Oval Facet Green Yellow Sillimanite Gem (ID: 411719)
1.03 ct (total 4.11ctw) Sillimanite
8 x 6 mm
$ 143.85
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4 pcs
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1.2ct Oval Facet Green Yellow Sillimanite Gem (ID: 411817)
1.19 ct (total 4.75ctw) Sillimanite
7.1 x 5 mm
$ 166.25
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2.8ct Oval Cabochon Grayish Brown Sillimanite Cat's Eye Gem (ID: 410593)
2.76 ct Sillimanite Cat's Eye
9.4 x 6.6 mm
$ 19.32
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5 pcs
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1ct Oval Facet Green Yellow Sillimanite Gem (ID: 411820)
1.04 ct (total 5.18ctw) Sillimanite
6.6 x 4.9 mm
$ 181.30
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1.3ct Oval Cabochon Smoke Sillimanite Cat's Eye Gem (ID: 474672)
1.33 ct Sillimanite Cat's Eye
6.7 x 5.7 mm
$ 3.99
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1.5ct Oval Facet Green Yellow Sillimanite Gem (ID: 411563)
1.50 ct Sillimanite
9 x 6.8 mm
$ 33.86
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2 pcs
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2.8ct Oval Facet Green Yellow Sillimanite Gem (ID: 411303)
2.80 ct (total 5.60ctw) Sillimanite
10.3 x 8 mm
$ 126.39
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4 pcs
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0.9ct Oval Facet Green Yellow Sillimanite Gem (ID: 411723)
0.87 ct (total 3.49ctw) Sillimanite
7 x 5.1 mm
$ 122.15
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4 pcs
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0.9ct Oval Facet Green Yellow Sillimanite Gem (ID: 411725)
0.87 ct (total 3.48ctw) Sillimanite
7 x 5.2 mm
$ 121.80
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1.6ct Oval Facet Green Yellow Sillimanite Gem (ID: 411527)
1.58 ct Sillimanite
8.1 x 6 mm
$ 35.66
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5 pcs
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1.1ct Oval Facet Green Yellow Sillimanite Gem (ID: 411819)
1.10 ct (total 5.52ctw) Sillimanite
7.1 x 5.1 mm
$ 193.20
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4 pcs
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0.8ct Oval Facet Green Yellow Sillimanite Gem (ID: 411721)
0.84 ct (total 3.35ctw) Sillimanite
6.9 x 5 mm
$ 117.25
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1.4ct Oval Facet Green Yellow Sillimanite Gem (ID: 411531)
1.35 ct Sillimanite
8 x 6.1 mm
$ 30.47
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2 pcs
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1.7ct Oval Facet Green Yellow Sillimanite Gem (ID: 411622)
1.67 ct (total 3.33ctw) Sillimanite
8 x 6.1 mm
$ 116.55
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5 pcs
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0.9ct Oval Facet Green Yellow Sillimanite Gem (ID: 411818)
0.86 ct (total 4.31ctw) Sillimanite
7 x 5.1 mm
$ 150.85
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2 pcs
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2.6ct Oval Facet Green Yellow Sillimanite Gem (ID: 411278)
2.58 ct (total 5.16ctw) Sillimanite
10 x 7.8 mm
$ 116.46
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1.4ct Oval Cabochon Smoke Sillimanite Cat's Eye Gem (ID: 474179)
1.37 ct Sillimanite Cat's Eye
7.8 x 4.6 mm
$ 4.11
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2 pcs
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2.6ct Oval Facet Green Yellow Sillimanite Gem (ID: 411279)
2.55 ct (total 5.09ctw) Sillimanite
10.1 x 8 mm
$ 114.88
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4 pcs
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1ct Oval Cabochon Smoke Sillimanite Cat's Eye Gem (ID: 409899)
0.98 ct (total 3.93ctw) Sillimanite Cat's Eye
7.1 x 4.7 mm
$ 14.23
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0.9ct Oval Facet Green Yellow Sillimanite Gem (ID: 411788)
0.91 ct Sillimanite
7 x 5 mm
$ 31.85
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.
Certified Customer Reviews
Overall Rating -> 10 star ratings
Easy to see the gemstones you are buying, easy to see prices and shipping.
Posted By Amy in October, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
I have been using GemSelect for at lest five years and I have no complaints!
Posted By in October, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
This site always has beautiful stones to choose from and you will get the actual gem that is pictured. The shipping is fast and reasonably priced.
Posted By CAC in October, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
I have not gotten my gems, but when i do i will be very happy, yet i did not like you had to pay $15 extra for faster shipping
Posted By Jack in October, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
I love GemSelect, personally. I browse their site almost daily to see all the new stones available. Their selection is pretty amazing. The quality isn't always the highest and the cut of the stones isn't always perfect. But for the price, and if you look hard enough, you can find a real gem, so to speak.
Posted By Patrick in September, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
I would recommend to a friend because of the quality of the products purchased. The gemstone quality is very high and the gems purchased are beautiful. Any friends interested in having custom jewelry made would definitely be recommended to the site. Also, every shipment is handled with care and I am very pleased with that.
Posted By Isaiah in September, 2018
Source: Bizrate
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