From Tomb Raider: Legend, you can find this gold artifact in level 2 - Peru "Return to Paraiso" - inside the ruins you'll have to solve a simple ball puzzle that makes use of pressure plates and movable balls/boulders to get this item.
Tomb Raider Legend - Peru Gold Artifact Papercraft
Lara Croft & Quad Bike Papercraft [Related Posts]
T-Rex Trophy Papercraft
Lara Croft Papercraft
Indiana Jones Papercraft
Temple of the Forbidden Eye Papercraft