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Diameter, mm (1mm - 0,039inch)

Polished stones - full range in stock "Diopside"

Diopside is a mineral from the pyroxene group. Forms an isomorphic series with hedenbergite, being its extreme member. Characteristic of skarns. It has a magmatic or contact-metamorphic nature. It has varieties:

     Anthochroite - light pink,
     Baikalite - dark or bluish green,
     Lavrovit - bright green,
     Violan - purple or blue,
     Chrome diopside - transparent emerald green.


You can see diopside stone for sale and buy it in the Minerals of Russia online store.

Physical properties of Diopside

General
Category Inosilicate mineral
Formula
(repeating unit)
MgCaSi2O6
IMA symbol Di
Strunz classification 9.DA.15
Crystal system Monoclinic
Crystal class Prismatic (2/m)
(same H-M symbol)
Space group C2/c
Unit cell a = 9.746 Å, b = 8.899 Å
c = 5.251 Å; β = 105.79°; Z = 4
Identification
Color Commonly light to dark green; may be blue, brown, colorless, white to snow white, grey, pale violet
Crystal habit Short prismatic crystals common, may be granular, columnar, massive
Twinning Simple and multiple twins common on {100} and {001}
Cleavage Distinct/good on {110}
Fracture Irregular/uneven, conchoidal
Tenacity Brittle
Mohs scale hardness 5.5 - 6.5
Luster Vitreous to dull
Streak white
Specific gravity 3.278
Optical properties Biaxial (+)
Refractive index nα= 1.663 - 1.699, nβ= 1.671 - 1.705, nγ= 1.693 - 1.728
Birefringence δ = 0.030
2V angle Measured: 58° to 63°
Dispersion Weak to distinct, r>v
Melting point 1391 °C
Code: 1658
Iron mine, Kovdor, Kola Peninsula, RF
79*41*22mm

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Code: 920
Iron mine, Kovdor, Kola Peninsula, RF
98*56*12mm

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Code: 3529
Tyukhterek field, Shirinsky district, Khakassia, RF
59*43*17mm

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