Quick Facts on Kyanite Stone
| Chemical Structure |
: | Al2SiO5 |
| Mineral |
: | Aluminum Silicate |
| Hardness |
: | 6.5 to 7.0 |
| Refractive Index |
: | 1.71 to 1.75. |
| Specific Gravity |
: | 6.56 to 6.67 |
| Luster |
: | Vitreous; Pearly |
| Solubility |
: | None |

The Latin
name of Kyanite stone is Kyanos, which means blue. These are typical
silicate minerals having blue color. These minerals are usually
found in aluminum rich metamorphic pegmatites and/or sedimentary
rocks. these mineral stones belonging to the alumino-silicate
series. As these mineral stones are powerfully Anisotropic
therefore, their hardness depends upon their crystallographic
direction.
These stones are found either in transparent form or in translucent
form. The major colors in which they are available are white, green,
gray and black. Their crystal system is Triclinic. These stones are
brittle in their nature. The other few associated minerals which are
found along with Kyanite are Sillimanite, Micas, Garnets,
Staurolite, Andalusite etc. the notable occurrence places of these
mineral stones are North Carolina and Georgia (both in U.S.A),
Brazil, Russia, India, Switzerland and Kenya.