Prehnite 12x16-18x25mm Jagged Rough Collar DSforGB1032023 It is frequently fluorescent under

It is frequently fluorescent under ultraviolet light

It is believed to increase one’s metaphysical connection with the earth

Like all other natural turquoise

No two are exactly alike

Viking explorers used thin pieces of Iolite as the world’s first polarizing lens to help them determine the exact location of the sun for navigation

Prehnite 12x16-18x25mm Jagged Rough Collar DSforGB1032023 It is frequently fluorescent underPrehnite 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.