This is the gold award / artifact found in the ancient Tiwanaku ruins in the Bolivia stage of Tomb Raider: Legend.
Tomb Raider Legend is the seventh game in the Tomb Raider series and its story revolves around a fragmented Excalibur sword - part of the King Arthur legends.
Video below shows how you can get the the item.
Tomb Raider - Bolivia Gold Award Papercraft
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