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>> Group(s) : pyroxenes, silicates
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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.

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).

See pictures of the mines / other pictures

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.

Looking alike stones

emerald , grossular , hiddenite , moldavite , peridot , tourmaline , vesuvianite

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.

Chemical characteristics

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 : transparent, translucent

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 diopside spectrum system

green chromiferous diopside spectrum system

green chromiferous diopside spectrum system

Fluorescence : variable

Purple, orange, yellow, green


Elongated prismatic


Crystal system : monoclinic

Other informations

Astrological sign : Virgo, Sagittarius

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  • Virgo Virgo
  • Sagittarius Sagittarius

It gives comfort and helps to get rid of negativity.