Sieber Agate 10mm Round AA Grade - 15-16 Inch 48hr_01202026 A cryptocrystalline Chalcedony

A cryptocrystalline Chalcedony

) Seraphinite is most commonly found in shades of dark green and gray

Many stones in the Russian crown jewels from the 17th century which were thought to be rubies are actually red Tourmaline

” which means that it can appear to be different colors as it shifts in the light

Sieber Agate 10mm Round AA Grade - 15-16 Inch 48hr_01202026 A cryptocrystalline ChalcedonySieber 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