diopside
diopside crystals
Russian black cabochon diopside starred with four branches “black star”
Russian green chrome diopside oval cut
lavrovite, vanadiferous diopside from Lake Baikal in Russia
chromiferous diopside crystal from Russia
violane variety of diopside
violane variety of diopside cut in cabochon
chromiferous diopside from Madagascar oval cut
cloòud like diopside inclusions
liquid-gas type inclusions in Russian chromiferous diposide
Detailed sheet
diopside
Its name comes from the Greek, “two” and “appearance” because of the double surface appearance of the prism when it is crystallized.
Diopside is also “starred”, “shimmering” and the chromite variety, gemstone essentially coming from Russia, is emerald green.
A deposit in Piedmont( Italy ) produces a translucent variety or opaque purplish blue, named Violane.
There is also a shimmering variety, mainly black with a 4-spoke asterism called “ black star “. The Lavrovite is a green diopside vanadium bearing variety which comes from Russia.
CHEMICAL CHARACTERISTICS
CaMg[Si2O6]
calcium magnesium inosilicate
PHYSICAL CHARACTERISTICS
Main color
green
Other colors
brown, colourless, yellow, black
the violane variety is blue-violet
Color of streak
white
Luster
vitreous
Hardness
5.0 to 6.5
Density
3.20 to 3.40
Cleavage
good
Fracture
conchoidal, uneven
easy cleavage
OPTICAL PROPERTIES
Transparency
translucent, transparent
Refractive index
1.660 - 1.730
Double refraction
0.023
definite, biaxial (+)
visible double refraction
Yes
Dispersion
0.020(0.012)
Pleochroism
variable
Number of colors
3
yellow-green, dark green, olive green
Absorption spectrum
508 - 505
spectrum for the green chromian variety
green diopside spectrum system
green chromiferous diopside spectrum system
Fluorescence
variable
purple, orange, yellow, green
CRYSTALS PROPERTIES
elongated prismatic
crystals system
monoclinic
OTHER INFORMATIONS
Astrological sign
Sagittarius, Virgo
APPROACHING GEMS
Exploited
sites
It is found in South Africa, Austria, Burma, USA, Finland, France, India (star variety), Italy, Madagascar, Sri Lanka, Russia (the Urals and in eastern Siberia).
use in jewelry
The emerald green variety is perfectly clear, and now increasingly used for earrings, rings, pendants.
Daily care
and precautions
Water washing with liquid dishwasher, rinse with water without lime and then with alcohol.
Historical
healing properties
It would be the stone of comfort, stronger than green tourmaline. It would help to relax, positive thinking and chase negative thoughts from the mind and not to be susceptible to negative influences from outside. It brings comfort in life challenges.
Other
Gems
Venez visitez
notre site web
voillot-joaillier.fr
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