Buy Sillimanite Gems(0) |
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Sillimanite Single |
Sillimanite Pairs |
Sillimanite Lots |
Sillimanite Faceted |
Sillimanite Cabochons |
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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Overall Rating -> 10 
I have used this site for sseveral years now. All has been great. I started collection gems from GemSelect for years and wanted to collect at least one of most stones. I loved Safers because the mols is a 9 + and they come in every color. This is the best place to buy gems for the assortment and price. Great place to learn about gems too. Sometimes the shipping is a little on the long side. But I would give them a 9.9 out of 10 !!
Overall Rating -> 10
Super easy to do business for great products.
Overall Rating -> 10
Todo muy bien en la compra ahora esperar recibir el pedido.
Overall Rating -> 10
Very pleased with shopping on this site. It's easy to navigate and information about gemstones is very good.
Overall Rating -> 10
I have received emails for about a year and today is the condition that had me decide on the purchase
Overall Rating -> 10
I have used GemSelect for several years and plan to shop more in the further. This is a good source of information on gemstones. I love looking at and learning about them. Lot more than I ever knew existed.
Overall Rating -> 10
I love the clear description of the certification options. It's very rare to see a gem site that offers a deep explanation of each institution that would certify the stone(s).
Overall Rating -> 8 
I am currently pleased. I like the layout of the website.
Overall Rating -> 10
Interested in unusual stones and found many that I purchased or will purchase in the near future. I have been a customer of gem select for almost ten years and have always been pleased with buying experience and the delivered product
Overall Rating -> 7 
I placed order#384714 based on the picture on your website and the stone came in much darker. I'm sure it's the same stone i ordered but your lighting made it seem a lighter blue. I was trying to match a stone for a customer and based on the picture it would have been close enough but the stone in person is a mile off.
Overall Rating -> 8
I did not realize how small the stone was. I cannot use it for the project I wanted, but I am keeping the stone and tru to use it in something else.
Overall Rating -> 10
I searched for the item by description and millimeter and had my choice come up and then made the best selection.
Overall Rating -> 10
Extremely easy to use, and I am fully satisfied with the purchase process.
Overall Rating -> 10
Purchased for my granddaughter she was very pleased with it.
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