Prehnite Natural 6X8 Pebble SD A Grade - 15-16 Inch R1111 all organic parts are replaced

all organic parts are replaced by minerals

firely new look to these stones

glass is melted in a furnace and then combined with a coloring agent to produce the swirling inclusions of pink within the clear material

Naturally occurring in hues of blue to green to green with spots and streaks of red

It has a hardness of 8 on the Mohs hardness scale

Prehnite Natural 6X8 Pebble SD A Grade - 15-16 Inch R1111 all organic parts are replacedPrehnite 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.