vesuvianite
vesuvianite crystals from Alchuri in Pakistan
biterminal vesuvianite crystal from Mexico
vesuvianite from Asbestos in Canada with pink manganiferous crystals
green vesuvianite crystal from Piemont in Italy
solid like inclusions, vesuvianite
Detailed sheet
vesuvianite
Its name comes from the Vesuvius (Italy) where it was discovered, it is also called vesuvienne, idocrase, wiluite (form the Wilui River in Yakutia, Russia).
The californite variety, discovered in 1963 by the famous mineralogist Kunz, is a massive, persistent and green variety of vesuvianite typical of United States, sometimes also called “California jade”, found in the Siskiyou Mountains.Of a solid color, with white spots, it is translucent to opaque and resembles nephritis (but its refractive index is higher) and grossular with which it can mix …
A rare bluish copper variety, is called ” cyprine ” after the island of Cyprus, although mainly found in Telemark (Norway). A manganese rich variety, of a beautiful pink color, was discovered in Canada.
There is also an emerald green chrome variety that also comes from Canada, in Jeffrey Mine, at Asbestos, Quebec.
Gemologists call it vesuvianite but mineralogists continue to call it idocrase, name given by René-Just Haüy, which comes from the Greek “idos ” and “krasis” meaning that the crystals have shapes similar to many other minerals.
CHEMICAL CHARACTERISTICS
(Ca,Mg,Al,...) (SiO7)4(SiO4)10 (OH,F,O)10
calcium, magnesium, aluminum, silicate
PHYSICAL CHARACTERISTICS
Main color
green
Other colors
blue, brown, colourless, yellow, pink, purple
typical intense olive green
Color of streak
white
Luster
resinous, vitreous
Hardness
6.5 to 0.0
Density
3.30 to 3.50
Cleavage
none
Fracture
conchoidal, uneven
OPTICAL PROPERTIES
Transparency
opaque, translucent, transparent
Refractive index
1.700 - 1.724
Double refraction
0.004
weak uniaxial (+/- )
visible double refraction
No
Dispersion
0.020(0.014)
Pleochroism
weak
Number of colors
2
changing shades
Absorption spectrum
461
for the green one. 584 for the brown one. 465 for the yellow one
dark vesuvianite spectrum system
light vesuvianite spectrum system
Fluorescence
none
Inclusions
crystalline needles
CRYSTALS PROPERTIES
both prismatic very elongated but also massive
crystals system
tetragonal
OTHER INFORMATIONS
Astrological sign
Aries, Leo, Pisces
APPROACHING GEMS
Exploited
sites
It is found in France, at Peguères (Hautes Pyrenees), at Anglas (Pyrénées Atlantiques), in Canari (Corsica), Brazil, Kenya, Mexico, Russia, Sri Lanka, Switzerland. The californite comes from United States as its name suggests, (only deposit).
A purplish pink manganese rich variety, comes from Jeffrey Mine, at Asbestos, in the Quebec province, Canada.
use in jewelry
It is rarely faceted, sometimes cut into cabochons, mainly for small decorative objects (californite).
The gem varieties come mainly from Kenya and Russia.
Daily care
and precautions
sensitive to shocks
imitations and
treatments
To date no synthesis.
Historical
healing properties
For healers, it can be used on various chakras depending on its shade. Placed on the solar plexus of men, it would increase lung capacity and blood oxygenation. Placed on the women sex chakra, it would increase their fertility and for men, would give energy to spermatozoids.
Green in color, it would facilitate the kidney and bladder activity.
Other
Gems
Venez visitez
notre site web
voillot-joaillier.fr
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