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and Turquoise
the great Roman orator
It appears green because of traces of Chromium
and Rutile as well
Most commonly mined in Madagascar
Sieber Agate 4mm Round AA Grade - 15-16 Inch R0007 and TurquoiseSieber agate is not a true agate but rather a glassy, dark blue grey or green copper slag that formed during ancient copper smelting in Germany, specifically from the Siebertal area. This historical "ancient slag" has a naturally swirling, intricate appearance resembling agate due to silica and mineral inclusions from the smelting process. It is a rare and collectible material known for its lapidary qualities, similar to obsidian, and is sometimes
US$ 184.50
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