![demantoide variety of andradite garnet from Russia, oval cut](https://www.patrickvoillot.com/wp-content/uploads/2021/03/grenat-demantoide-vert-taille-ovale-russie208-150x150.png)
![yellow milarite crystals from Jaquaraçu in Minas Gerais in Brazil](https://www.patrickvoillot.com/wp-content/uploads/2021/03/milarite-cristaux-jaquaracu-minas-gerais-bresil120-300x200.png)
milarite
Detailed sheet
milarite
Kenngott in 1870 awarded it its name from its first assumed place of discovery: the Val Mila in Switzerland, but this is not certain.
![](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
K2Ca4Al2Be4[Si24O60] - (H2O)
hydrated beryllium, aluminum 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
yellow
Other colors
brown, colourless
Color of streak
white
Luster
vitreous
Hardness
5.5 to 6.0
Density
2.45 to 2.60
Cleavage
indistinct
Fracture
uneven
![](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
translucent
Refractive index
1.526 - 1.550
Double refraction
0.003
very weak, uniaxial (-)
visible double refraction
No
Pleochroism
absent
Number of colors
1
Fluorescence
none
![](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
![](https://www.patrickvoillot.com/wp-content/uploads/2021/03/cristal-milarite.gif)
crystals system
hexagonal
![](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
It is found in Mexico (Valenciana Mine), Ethiopia (Konso), in the Altai in Mongolia, China, USA, Sweden, Austria (Tyrol), Switzerland (Valais).
use in jewelry
it’s a collection stone
Venez visitez
notre site web
voillot-joaillier.fr
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