rhodizite
londonite variety from Madagascar oval cut
Detailed sheet
rhodizite
Discovered in 1834, its name comes from the Greek “pink” because it has the property of coloring the torch flame in pink.
It presents the phenomenon of piezoelectricity and pyro-electricity.
The rhodizite is one of the poles a series dominated by potassium, the other pole being londonite where the cesium dominates. The name londonite honors the american David London.
CHEMICAL CHARACTERISTICS
(K,Cs)Al4Be4[(B,Be)12O24]
anhydrous borate
PHYSICAL CHARACTERISTICS
Main color
yellow
Other colors
white, grey, colourless, pink, green
Color of streak
white
Luster
vitreous
Hardness
8.0 to 8.5
Density
3.45 to 0.00
Cleavage
good
Fracture
conchoidal
an existing cleavage in one direction
OPTICAL PROPERTIES
Transparency
translucent, transparent
Refractive index
1.690 - 0.000
Double refraction
0.000
none, isotropic
visible double refraction
No
Dispersion
0.018
Pleochroism
absent
Number of colors
1
Fluorescence
variable
sometimes yellow
CRYSTALS PROPERTIES
massive dodecahedrons
crystals system
cubic
OTHER INFORMATIONS
APPROACHING GEMS
Exploited
sites
Beautiful crystal gems come from Sahanivotry, Sahatany Valley and Antsogombato, in Antsirabe Madagascar. It is also found in Russia (Sarapulsk Schaitansk and in the Urals), England (Devon) and the United States in a pegmatite at Fern, Florence County, Wisconsin.
use in jewelry
it is faceted and very rare, it is a collection stone.
Daily care
and precautions
slightly radioactive
Historical
healing properties
This stone would possess different properties, in relation to the crown chakra, it would strengthen our energy envelope. It contains cesium.
Other
Gems
Venez visitez
notre site web
voillot-joaillier.fr
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