![vesuvianite from Kenia](https://www.patrickvoillot.com/wp-content/uploads/2021/03/vesuvianite-kenya31-150x150.png)
![clinohumite of Tajikistan oval cut](https://www.patrickvoillot.com/wp-content/uploads/2021/03/clinohumite-ovale-tadjikistan205-300x200.png)
clinohumite
![clinohumite crystal from Tajikistan](https://www.patrickvoillot.com/wp-content/uploads/2021/03/clinohumite-cristal-tadjikistan-300x200.jpg)
clinohumite crystal from Tajikistan
![emerald cut clinohumite from Tajikistan](https://www.patrickvoillot.com/wp-content/uploads/2021/03/clinohumite-taille-emeraude-tadjikistan-300x200.jpg)
emerald cut clinohumite from Tajikistan
![clinohumite from Tajikistan](https://www.patrickvoillot.com/wp-content/uploads/2021/03/clinohumite-tadjikistan-300x200.jpg)
clinohumite from Tajikistan
![tubes like inclusions or discontinuous needles](https://www.patrickvoillot.com/wp-content/uploads/2021/03/inclusions-clinohumite-300x200.jpg)
tubes like inclusions or discontinuous needles
Detailed sheet
clinohumite
Discovered in 1876, on mont Vesuvius in Italy, it honors the name of the mineralogist Sir Abraham Hume (1749-1838).
Some clinohumite gemstone was first discovered in Tajikistan, than Pamir, and then later in Vietnam.
![](https://www.patrickvoillot.com/wp-content/uploads/2021/04/zoom-in.png)
![](https://www.patrickvoillot.com/wp-content/themes/astra-child/images/icon-image.png)
CHEMICAL CHARACTERISTICS
(Mg,Fe)9[(SiO4]4(F,OH)2
iron - magnesium fluoride silicate
![](https://www.patrickvoillot.com/wp-content/uploads/2021/04/zoom-in.png)
![](https://www.patrickvoillot.com/wp-content/themes/astra-child/images/icon-image2.png)
PHYSICAL CHARACTERISTICS
Main color
orange
Other colors
white, brown, yellow, red
the bright orange variety is the most sought
Color of streak
white
Luster
resinous, vitreous
Hardness
6.0 to 6.5
Density
3.12 to 3.77
Cleavage
indistinct
Fracture
conchoidal
![](https://www.patrickvoillot.com/wp-content/uploads/2021/04/zoom-in.png)
![](https://www.patrickvoillot.com/wp-content/themes/astra-child/images/icon-image3.png)
OPTICAL PROPERTIES
Transparency
transparent
Refractive index
1.630 - 1.675
Double refraction
0.028
definite, biaxial positive
visible double refraction
Yes
Dispersion
-
Pleochroism
weak
Number of colors
2
yellow, colorless
Fluorescence
weak
orange, with short UV
![](https://www.patrickvoillot.com/wp-content/uploads/2021/04/zoom-in.png)
![](https://www.patrickvoillot.com/wp-content/themes/astra-child/images/icon-image4.png)
CRYSTALS PROPERTIES
prismatic rarely large and well-shaped
![](https://www.patrickvoillot.com/wp-content/uploads/2021/03/cristal-clinohumite.gif)
crystals system
monoclinic
![](https://www.patrickvoillot.com/wp-content/uploads/2021/04/zoom-in.png)
![](https://www.patrickvoillot.com/wp-content/themes/astra-child/images/icon-image5.png)
OTHER INFORMATIONS
![](https://www.patrickvoillot.com/wp-content/uploads/2021/04/zoom-in.png)
![](https://www.patrickvoillot.com/wp-content/themes/astra-child/images/icon-image6.png)
APPROACHING GEMS
Exploited
sites
Orange crystals of gem quality come from the Pamir in Tajikistan (Spinel Mines) and some red crystals from Siberia in Russia. Also some orange crystals can be found in Vietnam.
It also can be found in China, Australia, USA, Brazil, Austria, Canada.
use in jewelry
It is faceted, and may be used in jewelry.
Venez visitez
notre site web
voillot-joaillier.fr
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