Sieber Agate 4mm Round AA Grade - 15-16 Inch Agate any color of the rainbow

any color of the rainbow

gray and white

Mother of Pearl

It derives its real name from the Greek “pyrites

With the possible exception of the horizon meeting the bright blue sky on a perfect summer day

Sieber Agate 4mm Round AA Grade - 15-16 Inch Agate any color of the rainbowSieber 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