Malachite

Malachite (pronounced mal-uh-kahyt)

(1) In mineralogy, a bright-green monoclinic mineral, occurring as a mass of crystals (an aggregate).  It manifests typically with a smooth or botryoidal (grape-shaped) surface and, after cutting & polishing, is used in ornamental articles and jewelry.  It’s often concentrically banded in different shades of green, the contrast meaning that sometimes lends the substance the appearance of being a variegated green & black.  Malachite is found usually in veins in proximity to the mineral azurite in copper deposits.  The composition is hydrated copper carbonate; the chemical formula is Cu₂CO₃(OH)₂ and the crystal structure is monoclinic.

(2) A ceramic ware made in imitation of this (in jewelry use, “malachite” is used often as a modifier).

(3) In mineralogy, as pseudomalachite, a mineral containing copper, hydrogen, oxygen, and phosphorus.

(4) In mineralogy, as azurite-malachite, a naturally-occurring mixture of azurite and malachite

(5) In organic chemistry, as malachite green, a toxic chemical used as a dye, as a treatment for infections in fish (when diluted) and as a bacteriological stain.

(6) Of a colour spectrum, ranging from olive-taupe to a mild to deeply-rich (at times tending to the translucent) green, resembling instances in the range in which the mineral is found.  In commercial use, the interpretation is sometimes loose and some hues are also listed as “malachite green”).

1350-1400: From the Middle French malachite, from the Old French, from the Latin molochītēs, from the Ancient Greek malachitis (lithos) (mallow (stone)) & molochîtis (derivative of molóchē, a variant of maláchē), from μολόχη (molókhē) (mallow; leaf of the mallow plant).  It replaced the Middle English melochites, from the Middle French melochite, from the Latin molochītis.  Malachite is a noun & adjective; the noun plural is malachites.

A pair of Malachite & Onyx inlay cufflinks in 925 Sterling Silver (ie 92.5% pure silver & 7.5% other metals), Mexico, circa 1970.

Although in wide use as a gemstone, technically malachite is copper ore and thus a “secondary mineral” of copper, the stone forming when copper minerals interact with different chemicals (carbonated water, limestone et al.  For this reason, geologists engaged in mineral exploration use malachite as a “marker” (a guide to the likelihood of the nearby presence of copper deposits in commercial quantities).  It’s rare for malachite to develop in isolation and it’s often found in aggregate with azurite, a mineral of similar composition & properties.  Visually, malachite & azurite are similar in their patterning and distinguished by color; azurite a deep blue, malachite a deep green.  Because the slight chemical difference between the two makes azurite less stable, malachite does sometimes replace it, resulting in a “pseudomorph”.  Although there is a range, unlike some minerals, malachite is always green and the lustrous, smooth surface with the varied patterning when cut & polished has for millennia made it a popular platform for carving, the products including al work, jewelry and decorative pieces.  For sculptors, the properties of malachite make it an easy and compliant material with which to work and it’s valued by jewelers for its color-retention properties, the stone (like many gemstones) unaffected by even prolonged exposure to harsh sunlight.  Despite the modern association of green with the emerald, the relationship between mankind & malachite is much more ancient. evidence of malachite mining dating from as early as 4000 BC found near the Isthmus of Suez and the Sinai whereas there’s nothing to suggest the emerald would be discovered until Biblical times, some two millennia later.

Lindsay Lohan in malachite green, this piece including both the darker and lighter ends of the spectrum.

The Malachite is relatively soft meant it was easy to grind into a powder even with pre-modern equipment; it was thus used to create what is thought to be the world’s oldest green pigment (described often as chrysocolla or copper green).  In Antiquity, the dye was so adaptable it was used in paint, for clothing and Egyptians (men & women) even found it was the ideal eye makeup.  Use persisted until oil-based preparations became available in quantity and these were much cheaper because of the labor-intensive grinding processes and the increasing price of malachite which was in greater demand for other purposes.  This had the side-effect of creating a secondary market for malachite jewelry and other small trinkets because the fragments and wastage from the carving industry (once absorbed by the grinders for the dye market) became available.  The use in makeup wasn’t without danger because, as a copper derivate, raw malachite is toxic; like many minerals, the human body needs a small amount of copper to survive but in high doses it is a poison’ in sufficient quantities, it can be fatal.  Among miners and process workers working with the ore, long-term exposure did cause severe adverse effects (from copper poisoning) so it shouldn’t be ingested or the dust inhaled.  Once polished, the material is harmless but toxicology specialists do caution it remains dangerous if ingested and any liquid with which it comes in contact should not be drunk.  Despite the dangers, the mineral has long been associated with protective properties, a belief not restricted to Antiquity or the medieval period; because the Enlightenment seems to have passed by New Agers and others, malachite pendants and other body-worn forms are still advertised with a variety of improbable claims of efficacy.

The Malachite Room of the Winter Palace, St Petersburg, Russia was, during the winter of 1838-1839, designed as a formal reception room (a sort of salon) for the Tsar & Tsarina by the artist Alexander Briullov (1798–1877), replacing the unfortunate Jasper Room, destroyed in the fire of 1837.  It’s not the only use of the stone in the palace but it’s in the Malachite Room where a “green theme” is displayed most dramatically, the columns and fireplace now Instagram favorites, as is the large large urn, all sharing space with furniture from the workshops of Peter Gambs (1802-1871), those pieces having been rescued from the 1837 fire.  Between June-October 1971 it was in the Malachite Room that the Provisional Government conducted its business until the representatives were arrested by Bolsheviks while at dinner in the adjoining dining room.  The putsch was denounced by the Mensheviks who the Bolsheviks finally would suppress in 1921.

Polished malachite pieces from the Congo, offered on the Fossilera website.

Where there is demand for something real, a supply of a imitation version will usually emerge and the modern convention is for items erroneously claiming to be the real thing are tagged “fake malachite” while those advertised only as emulation are called “faux malachite”.  Although not infallible, the test is that most fake malachite stones are lighter than the real thing because, despite being graded as “relatively soft” by sculptors, the stone is of high in density and deceptively heavy.  The patterning of natural malachite is infinitely varied while the synthetic product tends to some repetition and is usually somewhat brighter.  The density of malachite also lends the stone particular thermal properties; it’s inherently cold to the touch, something which endures even when a heat source is applied.  Fake malachite usually is manufactured using glass or an acrylic, both of which more rapidly absorb heat from the hand.

Lindsay Lohan with Rolex Datejust in stainless steel with silver face (left) and the Rolex's discontinued "malachite face" (centre & right).  Well known for its blue watch faces, during the more exuberant years of the 1970s & 1980s the company “splashed out” a bit and offered a malachite face.  The Datejust is now available with a choice of nine faces but the Green one is now a more restrained hue the company calls “mint green”.