Prehnite 2x3mm Rondelle Faceted A Grade - 15-16 Inch agate Generally this material is used

Generally this material is used for transistors and heat sinks and only recently has been used for jewelry and healing

Considered a stone of transformation and evolution

It can range in color from pale pink to deep rose or even rusty red tones depending on the concentration of Manganese

It was named from the Latin "Thule" - which was a term used by ancient Greeks and Romans to refer to the then-little-known lands to the north or present day Scandinavia

Prehnite 2x3mm Rondelle Faceted A Grade - 15-16 Inch agate Generally this material is usedPrehnite 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.