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Chrome Diopside

Diopside

By Tim Matthews, JD, FGA, GG, DGA,
CEO and President of JTV (retired)
Published: June 2014
Modified: September 2023
Chrome Diopside Polished Chrome Diopside Rough Chrome Diopside Jewelry
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Need chrome diopside in your gemstone collection? Shop chrome diopside gemstones on Jedora!
Table of Contents
  • General Information
  • Chrome Diopside Colors
  • Countries of Origin
  • History
  • Care
  • More About Chrome Diopside
  • Optical Phenomena

Chrome diopside is a vibrant green variety of diopside that is colored by chromium, and to a lesser extent iron. Clean, bright stones above 2 carats are rare. The only known commercial deposit of gem quality chrome diopside is in the Republic of Sakha in Siberia, Russia. Yakutsk, the capital city, has the coldest winter temperatures for any major city on earth. Mining can only take place during the summer months due to the extreme winter conditions in Siberia.

General Information

  • Classification
  • Optical Properties
  • Characteristic Physical Properties
  • Chemistry & Crystallography
Common Name
Chrome Diopside
Species
Diopside
Transparency
Transparent - Opaque
Dispersion
Strength: Moderate Fire Value: 0.020
Refractive Index
1.675-1.701
Tolerance:(+0.029/-0.010)
Birefringence
0.024- 0.030
Optic Character
Biaxial
Optic Sign
Positive
Polariscope Reaction
Doubly Refractive (DR)
Fluorescence
SWUV: Inert
LWUV: Green
Pleochroism
Dichroic, weak to strong light and dark green
Hardness
5.5-6.5
Specific Gravity
3.220-3.400 Range:0.11/-0.07 Typical:3.290
Toughness
Poor
Inclusions
Black needle-like magnetite inclusions that might be magnetic, metallic like inclusions and liquid inclusions. Gas inclusions, 2-phase inclusions, healed fractures and apatite. Sulfate minerals: anhydrite, aluminum sulfate, arcanite, barite, bloedite, celestite, glaserite, glauberite, gypsum, polyhalite, and thenardite. Silicate minerals: pectolite, phlogopite, and potassium feldspar.
Luster
Vitreous
Fracture
Conchoidal, Uneven
Cleavage
Good, in two directions
Chemical Name
calcium magnesium silicate
Chemical Formula
CaMgSi2O6
Crystal System
Monoclinic
Chemistry Classification
Silicate

Chrome Diopside Colors

  • Green Chrome Diopside
    Green

Countries of Origin

Tanzania, United Republic Of; Myanmar; Russian Federation; Angola; United States of America; Madagascar; United Kingdom of Great Britain and Northern Ireland; Portugal; Oman; Solomon Islands; Greece; Austria; Mongolia; Mozambique; Pakistan; Morocco; Unknown; China; Brazil; Poland; Slovakia; France; Lesotho; Argentina; Romania; Hungary; Japan; Kenya; Switzerland; Taiwan (Province of China); India; Spain; New Zealand; Canada; Mauritania; Norway; Botswana; Namibia; Congo (the Democratic Republic of the); Finland; Italy; Mexico; South Africa; Antarctica; Australia; Germany; Indonesia

History

Gem quality chrome diopside comes from the Inagli chrome diopside deposit which is located about 18.64 miles west of Aldan city, Yakutia, Russia. A.M. Korchagin started prospecting for gem material in the 1970’s. There are ten veins that contain chrome diopside but only one is economically viable. Gemstones began appearing in the market in the early 1980’s and became popular in the gemstone trade by the mid 2000’s.

Care

Diopside is moderately soft, so be mindful of scratching. Avoid abrasives and solvents.

Chrome Diopside Gemstone

More About Chrome Diopside

Although chrome diopside wasn't a common gemstone before the 1980s, it wasn't unheard of. Some people believed that it fell from the Tree of Life. Others believed this stone led to the practice of burying loved ones with a chrome diopside, to make certain that they had an opportunity to move on to a new cycle of life. Still other folklore suggests that the stone brings tranquility and peace. For that reason, some cultures recommend that a chrome diopside be affixed to the forehead at night in the belief that it would bring sweet dreams. Some say that the green of this stone connects one directly to the earth and helps make a direct connection to earth's energy.

Optical Phenomena

Cat's-Eye

Cat's-Eye Chrome Diopside
Cat's-Eye Chrome Diopside
  • Classification
Common Name
Cat's-Eye
Shop for chrome diopside on Jedora! This green stone has amazing color and an extreme story.
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