What is chalcolithic age?

 

 The Chalcolithic is the name given to the period in the Near East and Europe after the Neolithic and before the Bronze Age, roughly between about 4500 and 3500 BC.
This period has the earliest evidence for complex societies, the location of cemeteries outside of settlements, craft specialization in copper tool production (casting and lost wax), ivory, and ceramics. Chalcolithic is sometimes referred to as the 'Copper Age', and the word is from the Greek for copper (chalcos) and stone (lithos).