Archaeologists in Spain have unearthed a trove of 5,000 year old crystal weapons from a tomb complex. Knowing what I do about lithics, I am gobsmacked by this assemblage.
From Disclose TV :
An excavation of the megalithic tombs of the site at Valencina de la Concepcion in south-western Spain has uncovered a ‘remarkable set’ of crystal weapons. The weapons uncovered are described as exquisitely made and wonderfully well preserved. It is estimated that they date back to the around 3000 BC. It has been noted that the weapons are roughly the same shape as the flint arrowheads that were in common proliferation in the area during this era, but the crystal items would have required a much greater level of skill to construct.