Kyanite
SpiritRock Shop
Click on any photo to see a larger version
Museum Specimens
Official PayPal Seal
Return to Main Minerals List
Kyanite forms bladed crystals. It is generally blue, but can also be green or gray. It has a glassy luster. Kyanite has a
unique physical feature in that it has two different hardnesses. When its hardness is measured across the crystal, it is 7;
when it is measured down the length of the crystal, it is 5. All other minerals have a single hardness no matter where it is
measured on the crystal.
Kyanite is the variant spelling of the original name of this mineral, Cyanite. The name was derived from the Greek word
kyanos meaning blue in reference to this mineral’s most common color. The name was given by Abraham Gottlob
Werner in 1789.
Sillmanite was named in honor of Professor Benjamin Silliman (1779-1864) who was the first professor of mineralogy
at Yale University (as well as professor of chemistry for a time). The name was given by G.T. Bowen in 1824.
Andalusite was named after Andalusia, a province in southern Spain, where this mineral is found. The name was given
by Jean Claude Delametherie in 1798.
There are substantial deposits of Kyanite in the United States. The most important deposits are in Idaho and the
Appalachian Mountain region in Eastern United States. Gneisses in Southern California also have significant Kyanite
resources. Presently, however, it is not economical to mine these deposits. Should economic conditions change, these
deposits may be worth mining. South Africa supplies most of the Andalusite imported for industrial consumption in the
United States. France and India also produce Andalusite and Kyanite, respectively. The most recent finds of Kyanite
have come from Brazil
Kyanite and its related minerals are used to make a variety of refractory materials. Refractory materials are those that
are resistant to very high temperatures. As a result, more than half of the Kyanite consumed is used in refractories for
the production of steel. Kyanite is also used to produce refractories for nonferrous (non-iron-bearing) metals. Some is
consumed to make refractories for glass and heat-resistant ceramics. Kyanite is also used to make spark plugs and is
used for non-refractory applications.
Item# 7KYAN09209993
Kyanite Blades in Quartz matrix
from Brazil

$79.00
A very nice specimen of natural sapphire blue Kyanite Blades just as they are mined. Platy crystals of rich blue kyanite
formed in a matrix of clear quartz. The brilliant blue color varies in intensity throughout. This specimen was procured from a
Brazilian Minerals dealer at the 2020 Franklin, NC Show. It is from the Jequitinhonha Valley, Minas Gerais, Brazil

This specimen weighs 18.9 oz or 1.18 lbs (537g) and measures 5.8 x 3.8 x 2.6" (14.7 x 9.6 x 6.7cm)
Item# 9KYAN09176180
Kyanite Blades in matrix from Brazil

$30.00
A very nice specimen of natural sapphire blue Kyanite Blades just as they are mined. Platy crystals of rich blue kyanite formed
in a matrix of yellow-white quartz. The brilliant blue color varies in intensity throughout. This specimen was procured from a
Brazilian Minerals dealer at the July 2017 Franklin, NC Show. It is from the Jequitinhonha Valley, Minas Gerais, Brazil

This specimen weighs 6.7 oz or 0.42 lbs (192g) and measures 4.7 x 1.9 x 1.1" (12 x 4.9 x 2.7cm)
Item# 10KYAN09175421
Kyanite Blades in matrix from Brazil

$39.00
A very nice specimen of natural
sapphire blue Kyanite Blades just as
they are mined. Platy crystals of rich
blue kyanite formed in a matrix of white
quartz. The brilliant blue color varies in
intensity throughout. This specimen
was procured from a Brazilian Minerals
dealer at the July 2017 Franklin, NC
Show. It is from the Jequitinhonha
Valley, Minas Gerais, Brazil

This specimen weighs
10.3 oz or 0.64 lbs (293g)

and measures
4.5 x 2.3 x 1.9" (11.5 x 5.9 x 4.3cm)
This specimen even has the beginning
formation of Black Kyanite on the
bottom side.
Item# 22KYAN09200542
Kyanite Blades in matrix from Graves
Mountain Georgia

$30.00
A very nice specimen of natural sapphire blue Kyanite Blades just as they are mined. Platy crystals of rich blue kyanite formed
in a matrix of yellow-white quartz. The brilliant blue color varies in intensity throughout. This specimen was procured from a
Georgia Minerals dealer at the July 2017 Franklin, NC Show. It is from Graves Mountain, Georgia

This specimen weighs 8.7 oz or 0.54 lbs (247g) and measures 2.9 x 2.2 x 1.9" (7.5 x 5.6 x 5cm)

We were able to find a few small specimens of the elusive and highly desired mineral
Blue Kyanite from the Balsam Gap area in North Carolina.
These specimens are the result of over 4 years of searching in this rare locale.
These few specimens are all that we expect to ever offer, listed on 12/06/2020
The shipping weight of these is 0.25 lb each...1 or all 4 together will ship for the same price
Item# TN4BKY12200001
1.5g Blue Kyanite from Balsam Gap

$12.00
Item# TN5BKY12200001
3g Blue Kyanite from Balsam Gap

$22.00
Item# TN6BKY12200001
4 piece 2g Blue Kyanite Group
from Balsam Gap

$24.00
Item# TN7BKY12200001
7g Blue Kyanite from Balsam Gap

$30.00