Prehnite 7x10mm Faceted Tube - 15-16 Inch Ancient Cellar Agate which gives it a naturally

which gives it a naturally glossy appearance even before polishing

Sieber agate is not a true agate but rather a glassy

Its name is taken from the Greek word “rhyax

This stone is a combination of two very similar materials: Azurite is a deep blue mineral produced by weathered copper ore deposits

Similar to Tiger's Eye

Prehnite 7x10mm Faceted Tube - 15-16 Inch Ancient Cellar Agate which gives it a naturallyPrehnite was the first mineral to be named after a person: its discoverer, Dutch Colonel Hendrik Von Prehn. Von Prehn discovered the stone in South Africa in 1774. Prehnite is translucent to transparent, in colors from light green to yellow green to olive, with occasional inclusions of Black Tourmaline that crisscross the stone in fibrous patterns. It is a phyllosilicate composed of silicon, calcium and aluminum with trace amounts of iron.