Metals · Cu
Copper
Updated October 16, 2026
Copper is a warm, reddish metal and one of the first metals people ever worked, more than 10,000 years ago. Pure copper jewellery is cheap and handsome, but it darkens and can leave a harmless green mark on skin, because sweat reacts with copper to make green copper salts. Copper is also inside most cheap "gold" jewellery: it is the main metal in brass and in the core of gold-filled pieces.
- Element
- Cu, atomic number 29
- Colour
- Salmon pink when polished, brown with age, green with weathering
- In other metals
- Sterling silver, rose gold, brass and bronze all contain copper
- Biggest producer
- Chile mines more copper than any other country
Why copper turns skin green
Sweat, lotion and skin acids react with copper to form copper salts, which are green. It is harmless and washes off with soap. A thin coat of clear nail varnish or jewellery lacquer on the inside of a copper ring or cuff stops it.
Patina: brown, then green
Bare copper darkens to brown in weeks, and outdoors it slowly turns green (verdigris), the colour of the Statue of Liberty. Many people like the dark look; to bring back the shine, rub with lemon juice and salt or a commercial copper cleaner, rinse and dry.
Copper in ancient Egypt
In ancient Egypt gold belonged to the pharaoh, the temples and the rich: it was the flesh of the gods. Most people could not afford it, so they wore cheaper materials instead: rings and bangles of copper and bronze, and beads of faience, a glazed quartz paste that gets its blue-green colour from copper. Copper was also the working metal of Egypt; the stone for the pyramids was cut with copper chisels and saws, helped by sand as an abrasive.
About the health claims
Copper and magnetic bracelets are often sold with health claims. A controlled trial of copper bracelets and magnetic wrist straps for rheumatoid arthritis found no effect beyond placebo, so we list them as jewellery only.
The copper atom
A simplified picture: real electrons are fuzzy clouds, not dots on rings, but the count in each shell is real. The cube shows how the atoms stack in the solid metal.
Electron shells from each element's ground-state configuration; crystal structures at room temperature. Source: electron configurations of the elements and crystal structures of the elements.
Real copper pieces on Amazon
Each listing's own metal details were read on October 16, 2026 and match the title; we show its star rating, and leave out anything under 4 stars. Prices change, so the link goes to the live listing.
Copper art and objects
Hand-hammered and engraved solid copper, listed as solid copper; the most elaborate first.
Primo Lanterns LF-24G copper gas lantern A large handmade copper lantern from Primo, a US lantern maker; the G model is the gas version, so check the fuel type before buying. Bare copper darkens to brown over time unless sealed. See it on Amazon → 
Good Directions large rooster weathervane, pure copper A full-size rooftop rooster in pure copper, polished when new. Outdoors it slowly browns and then turns green. See it on Amazon → 
Good Directions polished copper eagle weathervane A large eagle weathervane in polished copper, with direction letters and a roof mount. Lacquer slows tarnish; it will still weather outside. See it on Amazon → 
Good Directions polished copper moose weathervane A big moose weathervane cut and shaped from copper sheet, sold for barns and cupolas. Polished finish; it weathers to brown and green outdoors. See it on Amazon → 
Good Directions copper bird bath with fountain, 18 in A polished copper bowl on a garden pole, with a small fountain pump. Copper bowls go brown and green outside; that patina is normal. See it on Amazon → 
Oval hand-engraved Turkish copper tray, 17.3 x 12.4 in A thick copper serving tray engraved by hand in Turkey, with brass handles. It has a protective coating, so it is for serving and display rather than polishing. See it on Amazon → 
Rectangular hand-engraved Turkish copper tray, 15.4 in Handmade in Turkey from thick copper with brass handles and a hand-engraved pattern. The purple colour is a coating over the copper, not the metal itself. See it on Amazon → 
Indian Shelf repousse copper water pitcher An Indian pitcher with repousse work, the pattern pushed out from the back of the copper sheet by hand. Handmade, so each one differs a little. See it on Amazon → 
Engraved pure copper pitcher, 1.2 mm thick A handmade jug from unusually thick 1.2 mm copper, engraved all over. Bare copper inside tarnishes and needs cleaning now and then. See it on Amazon → 
Monarch Cascading Leaves pure copper rain chain, 8.5 ft Copper leaves linked into a chain that carries rain down from a gutter. It ages from bright copper to brown and then green. See it on Amazon → 
Handmade oxidized copper lantern, 13.8 in A handmade lantern in 100% copper with a dark oxidized finish. Check the listing for the fuel or bulb type before buying. See it on Amazon → 
Tulip Home hand-hammered copper cezve set, five sizes Five Turkish coffee pots hammered by hand in the Ottoman style, smallest to largest. Traditional cezves are tin-lined inside for cooking. See it on Amazon → 
COPPER-BAR hammered copper Moscow mule mugs, set of 4 Four 16 oz mugs hammered by hand from solid copper, with extras in the box. Unlined copper should not hold acidic drinks for long; wash and dry after use. See it on Amazon → Statement copper jewellery
Bold pieces in solid copper.
Solid copper open-collar torque necklace A rigid open collar in solid copper, polished, in the shape of an ancient torc. It can leave a faint green mark on skin; clear nail varnish inside stops it. See it on Amazon → 
John S. Brana hammered copper cuff, 7 in A hammered cuff in solid, uncoated copper, handmade in the USA. Uncoated copper darkens with wear and can be polished back. See it on Amazon → 
Heavenly Metals pure copper Cuban curb chain A chunky curb-link chain in pure copper. Copper chains darken and can mark skin green; polish to restore. See it on Amazon → 
Pillar of Salt Studio solid copper double-spiral earrings Handmade earrings with two spirals of solid copper wire. Light to wear for their size. See it on Amazon → Pure copper jewellery
Listed as solid, uncoated copper.
Hammered Turkish copper cuff, 1.5 mm thick See it on Amazon → 
TheraCopper hammered pure copper cuff See it on Amazon → 
Solid copper cuff with embossed scroll leaf design See it on Amazon → 
Ikkao heavy pure copper Cuban chain, 24 in, 148 g See it on Amazon → 
TheraCopper pure copper rings, 2 pack See it on Amazon → Make your own
Copper wire is the cheapest way to learn wire wrapping before you move to silver.
Frequently Asked Questions
Is it bad that copper turns my skin green?
No. The green is copper salts from sweat and skin acids; it is harmless and washes off. Seal the inside of the piece with clear lacquer if it bothers you.
Do copper bracelets help arthritis?
A randomised controlled trial found copper bracelets and magnetic wrist straps had no effect on rheumatoid arthritis beyond placebo.