poudretteite
Detailed sheet
poudretteite
It owes its name to “Poudrette Quarry” in Mont Saint-Hilaire in Canada where it was discovered. The deep pink gem variety can be cut and was not discovered until 2001.
CHEMICAL CHARACTERISTICS
KNa2B[Si12O30]
potassium and sodium borosilicate
PHYSICAL CHARACTERISTICS
Main color
pink
Other colors
colourless, red, purple
Color of streak
white
Luster
vitreous
Hardness
5.0 to 0.0
Density
2.50 to 0.00
Cleavage
indistinct
Fracture
conchoidal
OPTICAL PROPERTIES
Transparency
translucent, transparent
Refractive index
1.480 - 1.530
Double refraction
0.021
definite
visible double refraction
Yes
Pleochroism
absent
Number of colors
1
Fluorescence
none
CRYSTALS PROPERTIES
very small dipyramidal
crystals system
hexagonal
OTHER INFORMATIONS
APPROACHING GEMS
Exploited
sites
It is also found at Mogok in Burma, where the crystal gems come from.
use in jewelry
rare collection stone of a very beautiful intense pink color
Other
Gems
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