It revealed that the composition of the object was mostly a mix of copper alloy (75%), with tin (7%) and lead (18%). The ...

Crafted with precision from a copper alloy comprising 75 per cent copper, 7 per cent tin, and 18 per cent lead, this dodecahedron stands as a testament to the fine craftsmanship of its era.

The dodecahedron found at Norton Disney was analyzed to consist out of 75% copper, 7% tin and 18% lead, with a width of 8.6 cm and weighing in at 254 grams. The polyhedral gold bead from Khao Sam ...