Small natural copper nuggetsIndividual Copper Nuggets | Stone Mania

Copper

Price: £0.15
Product Code: CPPR
Availability

 

 

Copper Nuggets | Individual Pieces

 

 

Copper nuggets from Zimbabwe, sold individually or in larger quantities.  Prices are calculated at fifteen pence per gram and there's a huge selection of different weights and sizes to choose from.  Due to the volume of copper that we sell it's not possible for us to photograph each nugget individually.

Copper was one of the first metals to have been used by man and can be traced back as far as 10,000 years. It was also the first metal to be smelted which is the process of extracting a metal from an ore by heating and melting.  Imported by the Roman Empire from Cyprus, copper was originally called aes cyprium meaning "metal of Cyprus" although that was later shortened to cuprum.

Widely used in industry because it resists corrosion from the air, moisture and sea water, copper conducts electricity and heat hence is used in pipes, wiring, heating, cooling applications and cooking pans.  It's widely alloyed with other metals including brass which is copper and zinc, bronze which is copper, zinc and tin although other elements are often added and sterling silver which is 7.5% copper 92.5% silver hence the widely used 925 hallmark.  Even though copper is used for the purpose of strengthening silver it is in itself quite a soft metal that's both ductile and malleable.  Once shaped and hammered it hardens but after being heated it softens once again.  Whilst most people think of silver as being a metal that tarnishes, in its purest form silver does not tarnish but copper does hence the tarnish seen on sterling silver is actually caused by the copper.      

Copper is an important trace element that's vital for the health of all living organisms and can be found in a wide range of foods.

 

 

large piece of native copper on display in a museum display cabinet
Harvard's Museum of Natural History, Cambridge, Massachusetts.  Photo Stone Mania ©

 

 

As well being a chemical compound copper can also occur as a native element (known as native copper) which means it's not combined with any other element.  Most copper is extracted from ores which are rocks that contain important elements and metals in sufficient quantities to make extracting them worthwhile but the quantity is often very small.  The distinctive green coloured mineral known as malachite is one of the oldest ores of copper.

Prior to 1992 coins in the United Kingdom contained 97% copper which meant the 2p coin contained 6.9 grams of copper and the penny 3.45 grams. As market price increased the amount of copper that was being used had to be reduced. From 1992 one and two pence coins have been manufactured from steel with only a thin copper plate hence they're now less valuable than they once were.  As of 2016 there are estimated to be approximately 10.5 billion 1p coins in circulation which equates to around £105,000,000.

 

 

Copper Nuggets | Individual Pieces Available


 

4.2g / 2.2 x 1.5 cms £0.63 - CPPR-001

 

4.8g / 2.6 x 1.8 cms £0.72 - CPPR-002

 

5.5g / 2 x 1.3 cms £0.82 - CPPR-003

 

5.7g / 2.8 x 1.4 cms £0.85 - CPPR-004

 

5.8g / 2.4 x 1.5 cms £0.87 - CPPR-005

 

7.6g / 2 x 1.3 cms £1.14 - CPPR-006

 

7.7g / 2.9 x 1.5 cms £1.15 - CPPR-007

 

8.1g / 2.2 x 1.8 cms £1.21 - CPPR-008

 

8.3g / 2.7 x 1.5 cms £1.24 - CPPR-009

 

9.1g / 2.4 x 1.9 cms £1.36 - CPPR-010

 

9.9g / 2.1 x 1.9 cms £1.48 - CPPR-011

 

10g / 2.2 x 1.6 cms £1.50 -  CPPR-012

 

10g / 2.8 x 1.3 cms £1.50 - CPPR-013

 

10.1g / 1.9 x 1.6 cms £1.51 - CPPR-014

 

12g / 2.1 x 1.7 cms £1.80 - CPPR-015

 

12g / 2.1 x 1.9 cms £1.80 - CPPR-016

 

12.7g / 2.2 x 1.6 cms £1.90 - CPPR-017

 

13.1g / 3 x 2.1 cms £1.96 - CPPR-018

 

14.6g / 3.5 x 2 cms £2.19 - CPPR-019

 

15g / 2 x 1.6 cms £2.25 - CPPR-020

 

15.4g / 2.2 x 1.8 cms £2.35 - CPPR-021

 




 

 

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