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Researchers from the Institut Français d'Etudes Anatoliennes in Istanbul and the Laboratoire de Tribologie et de Dynamiques des Systèmes have analyzed the oldest obsidian bracelet ever identified, discovered in the 1990s at the site of Aşıklı Höyük, Turkey. Using high-tech methods developed by LTDS to study the bracelet's surface and its micro-topographic features, the researchers have revealed the astounding technical expertise of craftsmen in the eighth millennium BC.
This process has revealed that the bracelet was made using highly specialized manufacturing techniques. The analyses carried out showed that the bracelet was almost perfectly regular. The symmetry of the central annular ridge is extremely precise, to the nearest degree and nearest hundred micrometers. This suggests that the artisans of the time used models to control its shape when it was being made. The surface finish of the bracelet (which is very regular, resembling a mirror) required the use of complex polishing techniques capable of obtaining a nanometer-scale surface quality worthy of today's telescope lenses.
Originally posted by Wildmanimal
reply to post by LightSpeedDriver
Now that is interesting. Reminds me of the "Dopa" artifacts from China.
Those markings appear exceptionally well ordered.
Almost too well.
Originally posted by Xcathdra
Yet another clue that we dont know as much as we think about our past history. Its right up there with the recent discovery of bodies dating back to the 1100's in Peru. Horses were found along with the human remains even though science is saying horses first arrived in the Americas when the Europeans arrived with them.
Digital reconstruction of the bracelet proposed by Mohamed Ben Tkaya (LTDS). Credit: Obsidian Use Project Archives. This image is available from the CNRS photo library,