Cobble Creek: 100g lot of Green Kyanite from Tanzania
Green colored Kyanite from Tanzania. A 100 gram lot will include 25 to 30 kyanite blades. If you're looking for less, check out our other listings for 10 gram or 50 gram lots.
Blades range from 1/2" to 1" blades included. Great for jewelry, wire wrapping, and or just adding to your collection.
Each order will be a random pull from our bulk supply.
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.
Mar 21, 2021
beautiful stones, all stones were good quality
Mar 2, 2021
Dec 12, 2020
Excellent product delivered quickly! Thank you
Jul 1, 2019
Perfect for my needs and exactly as shown and advertised. Very happy and will shop here again!
Feb 17, 2019
Always great quality and communication!