irisharchaeology: This is pretty spectacular. A spearhead fashioned out of rock crystal from Valencina de la Concepción, Spain. It dates from the 3rd millennium BC Source 

irisharchaeology: This is pretty spectacular. A spearhead fashioned out of rock crystal from Valencina de la Concepción, Spain. It dates from the 3rd millennium BC Source 

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from: https://jtl4.tumblr.com/post/179949392281