![gypsum crystals from Spain](https://www.patrickvoillot.com/wp-content/uploads/2021/03/gypse-cristaux-espagne167-150x150.png)
![pumpellyite from Lake Superior in Michigan in the U.S.](https://www.patrickvoillot.com/wp-content/uploads/2021/03/pumpellyite-lac-superieur-usa-300x200.jpg)
pumpellyite
![cabochon of pumpellyite](https://www.patrickvoillot.com/wp-content/uploads/2021/03/pumpellyite-cabochon-300x200.jpg)
cabochon of pumpellyite
![cabochon of pumpellyite](https://www.patrickvoillot.com/wp-content/uploads/2021/03/pumpellyite-cabochon-2-300x200.jpg)
cabochon of pumpellyite
![pumpellyite cabochon](https://www.patrickvoillot.com/wp-content/uploads/2021/03/pumpellyite-cabochon-3-300x200.jpg)
pumpellyite cabochon
Detailed sheet
pumpellyite
Rare mineral found in the Carriere de la fleche, at Bertrix in the Ardennes, Belgium. We must speak of “pumpellyites” because there are some in which magnesium dominates, in others it is aluminum and yet in others it is iron, as shown here for this green colored stone
![](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
Ca2(Al,Fe,Mg)Al2[SiO4][Si2O7] (OH,O)2 - H2O
complex 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
green
Other colors
white, blue, brown, grey, yellow
Color of streak
white
Luster
vitreous
Hardness
6.0 to 0.0
Density
3.20 to 3.30
Cleavage
perfect
Fracture
splintery, 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, transparent
Refractive index
1.675 - 1.722
Double refraction
0.013
weak, biaxial (+)
visible double refraction
No
Dispersion
+
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
fibrous acicular
![](https://www.patrickvoillot.com/wp-content/uploads/2021/03/cristal-pumpellyite.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
They are found in Russia, Japan, Ecuador, Chile, United States, Germany, England.
use in jewelry
polished to be cabochon cut
Historical
healing properties
It would be in connection with the heart chakra. It is given the power to reduce the fear before undertaking a long journey.
Venez visitez
notre site web
voillot-joaillier.fr
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo consectetur adipiscing elit. Ut elit tellus, luctus nec.