Turquoise Mine in Neyshabur, The Oldest in The World The 7000 Year Old Turquoise Mine of Neyshabur Neyshabur Turquoise Mine is the oldest active mine in the world, and…
Most Expensive Metals in the World What are the Most Expensive Metals on Earth? Despite being among the most costly metals in the world, gold and…
History of Silver History of the Use of Silver Metal The history of the use of silver metal dates back to 4 thousand…