Prehnite Natural 6X8 Pebble SD A Grade - 15-16 Inch 5pf6192026 The rounds even resemble little

The rounds even resemble little Earths

The name "heliodor" is derived from two Greek words: helios "sun

Formed deep underground during the cooling of magma

but also for industrial purposes from watch gears and scientific instruments to sandpaper and other abrasives

yellow and white

Prehnite Natural 6X8 Pebble SD A Grade - 15-16 Inch 5pf6192026 The rounds even resemble littlePrehnite 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.