![pink pezzottaite from Madagascar oval cut](https://www.patrickvoillot.com/wp-content/uploads/2021/03/pezzottaite-ovale-madagascar98-150x150.png)
![oval cut johachidolite from Mogok in Burma](https://www.patrickvoillot.com/wp-content/uploads/2021/03/johachidolite-mogok-birmanie150-300x227.png)
johachidolite
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johachidolite crystal from Corea
![joachidolite from Brazil oval cut](https://www.patrickvoillot.com/wp-content/uploads/2021/03/johachidolite-taille-ovale-bresil-300x207.jpg)
joachidolite from Brazil oval cut
Detailed sheet
johachidolite
It is named after the locality where it was discovered: Johachido District in North Korea. Recent discovery at Mogok in Burma of a variety of beautiful yellow-orange gem quality stones.
![](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
CaAl [B3O7]
aluminium and calcium borate mineral
![](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
white, colourless
Color of streak
white
Luster
vitreous
Hardness
7.5 to 0.0
Density
3.40 to 0.00
Cleavage
none
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
opaque, translucent, transparent
Refractive index
1.710 - 1.730
Double refraction
0.014
weak, biaxial (+)
visible double refraction
No
Dispersion
++
Pleochroism
absent
Number of colors
1
Fluorescence
strong
blue
![](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
very small flattened and dipyramidal crystals
crystals system
orthorhombic
![](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
The only known deposit that produces a gem quality, that can be cut, is in the region of Mogok in Burma.
use in jewelry
For now it is a collection stone, but its hardness and beautiful color should make it more popular if there were discoveries of bigger stones.
Venez visitez
notre site web
voillot-joaillier.fr
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