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Malachite

Malachite

By Tim Matthews, JD, FGA, GG, DGA,
CEO and President of JTV (retired)
Published: June 2014
Modified: April 2022
Malachite Polished Malachite Rough Malachite Jewelry
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Table of Contents
  • General Information
  • Malachite Colors
  • Countries of Origin
  • History
  • Care
  • More About Malachite

Malachite is generally opaque and comes in a vivid bluish green to green color. It is usually banded in two or more tones of green and may have a subtle sheen. This gem is a secondary copper mineral and is commonly found in conjunction with azurite, a bold blue copper carbonate mineral. A mix of the two minerals is often called azurmalachite.

General Information

  • Classification
  • Optical Properties
  • Characteristic Physical Properties
  • Chemistry & Crystallography
Common Name
Malachite
Species
Malachite
Transparency
Opaque
Dispersion
Strength: None
Refractive Index
Over The Limit 1.655-1.909
Birefringence
0.254
Optic Character
Biaxial
Optic Sign
Negative
Polariscope Reaction
Doubly Refractive (DR)
Fluorescence
SWUV: inert
LWUV: inert
CCF Reaction
None
Pleochroism
None
Hardness
3.5-4
Streak
Light Green
Specific Gravity
3.250-4.100 Typical:3.950
Toughness
Poor
Inclusions
Malachite is often seen with botryoidal growth, curved or angular banding alternating between lighter and darker shades of green. Stones may have fibrous structure and sheen. Stones might show scratches and dull polish due to low mohs hardness.
Luster
Vitreous, Silky
Fracture
Uneven, Splintery
Cleavage
Perfect, in one direction, Good, in one direction
Chemical Name
copper carbonate hydroxide
Chemical Formula
Cu2CO3(OH)2
Crystal System
Monoclinic
Chemistry Classification
Carbonate

Malachite Colors

  • Green Malachite
    Green

Countries of Origin

Tanzania, United Republic Of; Russian Federation; United States of America; Zambia; Congo; Bolivia (Plurinational State of); Canada; Austria; Unknown; China; Ireland; Namibia; Congo (the Democratic Republic of the); Italy; Mexico; South Africa; Zimbabwe; Israel; Australia; France; Germany

History

4,000 years ago, malachite was mined in Egypt and Israel for copper smelting to produce weapons and tools. It was also mined for sculptural and decorative use. The large deposits in the Ural Mountains supplied material for gemstones and sculptural objects in the 1800’s. Malachite was used as eye paint by the ancient Egyptian’s. Malachites use as a paint pigment dates to the 7th century in Japanese and Chinese paintings. It was used in European Renaissance paintings but fell out of favor until the 19th century. Malachite works well for fresco and egg tempera painting, but it tends to be too pale when finely ground for use in oil paints.

Care

Malachite is worn best at your ears and your neckline. It measures at 3 ½ - 4 on the Mohs scale of hardness. Bracelets and rings are best worn with care. Exercise care in cleaning, too. No harsh chemicals or ultrasonic cleaners. Wipe with a soft damp cloth and dry thoroughly. Malachite is soluable in acid.

More About Malachite

In ancient times it was believed that malachite could prevent falling and protect travelers. In some regions of Italy, malachite was believed to protect against the evil eye. Closely related is the belief that, if hung on a baby's bed, malachite could protect the child from evil and bring tranquil sleep. It was also believed that parents who held malachite in the palms of their hands would enjoy restful sleep. Malachite was also thought to attract financial success. After all, it's very green. We enjoy the many folkloric beliefs around oh-so-green malachite. Please remember that there is no scientific evidence of fact in folklore.

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