Diopside

A pyroxene mineral; chrome diopside is the vivid green gem variety.

Colors & patterns

Green shades; some dark material shows a star when correctly cut.

Typical origins

Russia is a notable source of chrome diopside; other diopside varieties occur worldwide.

Hardness

5.5–6.5 on the Mohs scale.

Choosing & setting this material

Cleavage and moderate hardness favor pendants, earrings and protected settings. A star is a special optical effect and is not present in every cab.

Care & cleaning

Clean gently with lukewarm water, a little mild soap and a soft cloth, then dry. Avoid steam, ultrasonic cleaners, harsh chemicals and sudden temperature changes, especially when treatments are unknown.

Origins above describe typical sources of the material, not the origin of an illustrated or stocked stone. Hardness measures scratch resistance, not resistance to breaking. Confirm the identity and treatments of the actual piece.

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Further reading: Material reference · GIA: gem treatments