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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (296): Sillimanite - Cat's Eye Sillimanite Clear All
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5 pcs
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thumb image of 1.1ct Oval Facet Green Yellow Sillimanite (ID: 411819)
1.10 ct (total 5.52ctw) Sillimanite
7.1 x 5.1 mm
$ 193.20
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5 pcs
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thumb image of 0.9ct Oval Facet Green Yellow Sillimanite (ID: 411818)
0.86 ct (total 4.31ctw) Sillimanite
7 x 5.1 mm
$ 150.85
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1 pc
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thumb image of 1.3ct Oval Cabochon Smoke Sillimanite Cat's Eye (ID: 474672)
1.33 ct Sillimanite Cat's Eye
6.7 x 5.7 mm
$ 3.99
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5 pcs
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thumb image of 1ct Oval Facet Green Yellow Sillimanite (ID: 411820)
1.04 ct (total 5.18ctw) Sillimanite
6.6 x 4.9 mm
$ 181.30
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6 pcs
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thumb image of 0.7ct Oval Facet Green Yellow Sillimanite (ID: 411822)
0.67 ct (total 4.04ctw) Sillimanite
6.1 x 4.2 mm
$ 141.40
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4 pcs
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thumb image of 1.2ct Oval Facet Green Yellow Sillimanite (ID: 411817)
1.19 ct (total 4.75ctw) Sillimanite
7.1 x 5 mm
$ 166.25
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4 pcs
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thumb image of 1ct Oval Facet Green Yellow Sillimanite (ID: 411717)
0.97 ct (total 3.89ctw) Sillimanite
7.2 x 5.2 mm
$ 136.15
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1 pc
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thumb image of 1.4ct Oval Facet Green Yellow Sillimanite (ID: 411566)
1.42 ct Sillimanite
9 x 6.9 mm
$ 32.05
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4 pcs
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thumb image of 0.8ct Oval Facet Green Yellow Sillimanite (ID: 411721)
0.84 ct (total 3.35ctw) Sillimanite
6.9 x 5 mm
$ 117.25
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1 pc
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thumb image of 1.6ct Oval Facet Green Yellow Sillimanite (ID: 411567)
1.58 ct Sillimanite
8.8 x 6.4 mm
$ 35.66
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2 pcs
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thumb image of 2.8ct Oval Facet Green Yellow Sillimanite (ID: 411303)
2.80 ct (total 5.60ctw) Sillimanite
10.3 x 8 mm
$ 126.39
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2 pcs
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thumb image of 2.6ct Oval Facet Green Yellow Sillimanite (ID: 411278)
2.58 ct (total 5.16ctw) Sillimanite
10 x 7.8 mm
$ 116.46
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1 pc
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thumb image of 1.5ct Oval Facet Green Yellow Sillimanite (ID: 411524)
1.50 ct Sillimanite
8.1 x 6.2 mm
$ 33.86
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1 pc
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thumb image of 1.6ct Oval Facet Green Yellow Sillimanite (ID: 411523)
1.62 ct Sillimanite
8 x 6.1 mm
$ 36.56
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4 pcs
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thumb image of 1.1ct Oval Facet Green Yellow Sillimanite (ID: 411722)
1.10 ct (total 4.41ctw) Sillimanite
7.8 x 6 mm
$ 154.35
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4 pcs
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thumb image of 1ct Oval Facet Green Yellow Sillimanite (ID: 411719)
1.03 ct (total 4.11ctw) Sillimanite
8 x 6 mm
$ 143.85
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3 pcs
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thumb image of 1.1ct Oval Facet Green Yellow Sillimanite (ID: 411811)
1.08 ct (total 3.23ctw) Sillimanite
7.3 x 5.1 mm
$ 113.05
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1 pc
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thumb image of 1.1ct Oval Facet Green Yellow Sillimanite (ID: 411646)
1.05 ct Sillimanite
8.1 x 6.1 mm
$ 36.75
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4 pcs
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thumb image of 0.9ct Oval Facet Green Yellow Sillimanite (ID: 411725)
0.87 ct (total 3.48ctw) Sillimanite
7 x 5.2 mm
$ 121.80
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4 pcs
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thumb image of 1ct Oval Cabochon Smoke Sillimanite Cat's Eye (ID: 410196)
0.97 ct (total 3.87ctw) Sillimanite Cat's Eye
7.1 x 4.6 mm
$ 14.01
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4 pcs
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thumb image of 0.9ct Oval Facet Green Yellow Sillimanite (ID: 411723)
0.87 ct (total 3.49ctw) Sillimanite
7 x 5.1 mm
$ 122.15
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
offer military prices
Posted By Frobb1968 in August, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
Trustworthy company & site, great products.
Posted By KM in August, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
I have been ordering from GemSelect for at least 6 years. Every single order was perfect - every item was as advertized, in perfect condition and arrived well within the specified time frame. I have recommended them to several friends.
Posted By Jim in August, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
Excellent company with excellent website!
Posted By Marcy in August, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
Happy with price and ease of purchase. Will tell others
Posted By JJ Kool Juan in August, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
Very pleased with my purchase in all aspects!!!!!
Posted By JJ Kool Juan in August, 2018
Source: Bizrate
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Size and Weight

Gems are always measured in Millimeter (mm)

Dimensions are given as;
length x width x depth,
except for round stones which are;
diameter x depth

Select gems by size, not by weight!
Gem varieties vary in density, so carat weight is not a good indication of size

Note: 1ct = 0.2g

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