Prehnite Natural 6X8 Pebble SD A Grade - 15-16 Inch hps_07272023 the only region in the

the only region in the world where the stone is found

usually in white on hues of brown

but it is opaque as well

Its color is due to the presence of Manganese and Iron in the stone

intricate patterns of minute black flecks

Prehnite Natural 6X8 Pebble SD A Grade - 15-16 Inch hps_07272023 the only region in thePrehnite 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.