Cobble Creek: 1/4 LB Blue Kyanite Blades (A++) from Brazil
The quality of these blades are up there. Great for wrapping! Not flaky like a lot of the kyanite you will see out there. These are the blades you want when incorporating into jewelry or artwork. This is nice quality stuff from Brazil, plus deep blue hues run throughout each blade.
Each 1/4 pound order will include 8 -12 blades that are 1" to 3" inches in average. Please let us know if you're looking for a particular range in sizes and we can see if we can accommodate when pulling your order.
Kyanite is a typically blue aluminosilicate mineral, commonly found in aluminium-rich metamorphic pegmatites and/or sedimentary rock. Kyanite in metamorphic rocks generally indicates pressures higher than four kilobars. Although potentially stable at lower pressure and low temperature, the activity of water is usually high enough under such conditions that it is replaced by hydrous aluminosilicates such as muscovite, pyrophyllite, or kaolinite. Kyanite is also known as disthene, rhaeticite and cyanite.
Kyanite is a member of the aluminosilicate series, which also includes the polymorph andalusite and the polymorph sillimanite. Kyanite is strongly anisotropic, in that its hardness varies depending on its crystallographic direction. In kyanite, this anisotropism can be considered an identifying characteristic.
At temperatures above 1100 °C kyanite decomposes into mullite and vitreous silica via the following reaction: 3(Al2O3·SiO2) → 3Al2O3·2SiO2 + SiO2. This transformation results in an expansion.
Its name comes from the same origin as that of the color cyan, being derived from the Ancient Greek word κύανος. This is generally rendered into English as kyanos or kuanos and means "dark blue".
1-2 business days
I'll do my best to meet these shipping estimates, but can't guarantee them. Actual delivery time will depend on the shipping method you choose.
Buyers are responsible for any customs and import taxes that may apply. I'm not responsible for delays due to customs.
Just contact me within: 7 days of delivery
Ship items back to me within: 14 days of delivery
But please contact me if you have any problems with your order.
Because of the nature of these items, unless they arrive damaged or defective, I can't accept returns for:
Buyers are responsible for return shipping costs. If the item is not returned in its original condition, the buyer is responsible for any loss in value.
May 18, 2020
Nice variation in sizes. Great quality. Carefully wrapped.
Mar 4, 2020
Love these pieces! Beautiful, high quality, nice size kyanite, and fast shipping. Much appreciated!
Nov 13, 2019
Beautiful, carefully packaged and with minimal splintering/chipping--which is expected of some natural crystal structures. Very jmpressed
Apr 16, 2019
Exactly as described. Well packaged. Very satisfied. Thank you.