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Sieber Agate

Basically no agate but a glassy copper sludge that these copper smears formed when winning copper from copper ore through heat
Found in Siebertal, Harz, Germany
Although sold as an agate, it is technically a glassy slag left from an ancient copper smelting process over 1400 years ago

These are priced by weight and not necessarily by size.

$1.25

Quantity

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