Bracelet is made 40,000 years ago by Denisovan who used a tool like a drill to make holes of the same diameter in the jewelry. It was obviously made by a master craftsman. The bracelet is made of chlorite a silicate mineral usually green in color. Chlorite is the name of a group of common sheet silicate minerals that form during the early stages of metamorphism. Most chlorite minerals are green in color, have a foliated appearance, perfect cleavage, and an oily, soapy feel. They are found in igneous, metamorphic and sedimentary rocks.
The body jewelry was found in the Denisovan cave in Siberia - the cave that the premodern hominids were named after. They were close enough genetically to Homo sapiens for inter-breeding to occur producing fertile offspring. The term "human" is now loosely used to include this species and back to Homo erectus.
This find puts Denisovans ahead of Homo sapiens technologically. Denisovans were much older than Homo sapiens leaving Africa earlier. They could polish, grind and rasp hard materials using animal skins that they cured into leather in a basic way, The bracelet was polished.
No evidence could be found of modern humans being in the location at that time or since. Denisovans had been in the cave a long time. Woolly mammoth bones and artifacts found there go back 125,000 years. They came out of Africa soon after Homo erectus began moving from the continent.
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