Copper nugget - Height: 3 cm - Width: 6 cm- 210 g - (1)

Copper is the chemical element with atomic number 29 and its symbol is Cu. It is the first element in Group 11 of the periodic table, part of the d-block, and is therefore a transition element. Metallic copper is the second-best conductor of electricity after silver, followed then by gold. It is also called "red gold" due to its coloration. Copper is the metal that humanity has used for the longest time. Copper was already known to some of the oldest civilizations of which we have evidence; the history of its use is estimated to be at least 10,000 years old. Copper nugget, from Michigan's Lake Superior Copper District, Central America and the Caribbean. Weight: 210 g Dimensions: 11x6x3 cm Shipping via express courier (tracking)

估價:$24.58

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