Prehnite 7x10mm Faceted Tube - 15-16 Inch Pearl Sieber agate is not a

Sieber agate is not a true agate but rather a glassy

creating a beautiful blend of pink and green in mottled patterns

white and reddish brown in speckles

The measurements will be indicated on the right side of the item

also known as the Stone Age

Prehnite 7x10mm Faceted Tube - 15-16 Inch Pearl Sieber agate is not aPrehnite 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.