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Copper (Native)
Copper (Native) is native element, Cu. In the hand, it rates 2.5 to 3 on the Mohs scale, and it runs salmon pink fresh and copper orange. Salmon-orange malleable metal in branching or nugget forms, dense, dentable, and tarnishing toward brown-green. Basalt-hosted deposits; the classic: Keweenaw Peninsula, Michigan (USA); also Arizona, Russia.
The geology.
Copper (Native) carries the formula Cu. It belongs to the isometric system. Catalogues list it as native element.
It sits at 2.5 to 3 on the Mohs scale. The surface reads metallic. Light behaviour is opaque. Specific gravity runs 8.9. The streak is copper red, shining. It breaks with hackly fracture; malleable.
Salmon-orange malleable metal in branching or nugget forms, dense, dentable, and tarnishing toward brown-green.
It reaches buyers as dendritic branches, nuggets, sheet copper in matrix or tumbled.
The origins.
Basalt-hosted deposits; the classic: Keweenaw Peninsula, Michigan (USA); also Arizona, Russia.
On value, the database notes: affordable; large crystallized specimens are collector pieces.
Traditional associations.
In energy work traditions, associated with conducting and amplifying energy.
We keep this section because people ask. It sits below the geology on purpose, and none of it describes something the stone does.
Spotting the real thing.
Salmon-orange malleable metal in branching or nugget forms, dense, dentable, and tarnishing toward brown-green.
Electroformed/cast copper 'specimens' exist; organic branching and matrix attachment indicate the real thing.
| Looks like | How to tell them apart |
|---|---|
| Chalcopyrite | Chalcopyrite is brassy yellow and brittle; copper is orange and bends |
| Goldstone | Goldstone is sparkly glass, not solid metal |
| Painted lead castings | Cast fakes show mold seams; real copper dendrites branch organically |
At-home tests.
Before anyone talks you into a lab report, these are the checks worth doing yourself on copper (native).
| Test | What you should see |
|---|---|
| By eye | Dents under a pin rather than shattering |
| By weight | Extreme heft (SG 8.9) |
| Scratch check | Fresh scratch is bright salmon metal |
If these checks leave you unsure, that is what appraisers are for. Do not file, heat or soak a piece to find out.
Care & handling.
At 2.5 to 3 on the Mohs scale this is a soft material. Keep it as a display piece, store it apart from harder stones, and skip daily-wear settings.
It breaks with hackly fracture; malleable, which is worth knowing before you set it or drop it.
Most damage happens during cleaning, not wearing. Avoid steamers, ultrasonic tanks and anything from under the sink.
A deeper look.
Extended detail on composition, sourcing, authentication and market value.
The physical record
The formula on record is Cu. Crystal system: Isometric. Specific gravity: 8.9. Streak: Copper red, shining. Cleavage and fracture: Hackly fracture; malleable.
How it reaches the market
Basalt-hosted deposits; the classic: Keweenaw Peninsula, Michigan (USA); also Arizona, Russia.
What it gets confused with
Chalcopyrite: Chalcopyrite is brassy yellow and brittle; copper is orange and bends. Goldstone: Goldstone is sparkly glass, not solid metal. Painted lead castings: Cast fakes show mold seams; real copper dendrites branch organically.
What it is worth
Affordable; large crystallized specimens are collector pieces.
Where buyers get caught
Electroformed/cast copper 'specimens' exist; organic branching and matrix attachment indicate the real thing.
One more thing
Michigan's native copper was traded by Indigenous peoples across North America 6,000 years before Columbus.
An education-first guide.
There is nothing to buy on this page. Copper (Native) is not part of our catalogue, and the guide is here anyway because somebody searching the name deserves a straight answer.
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