Prehnite 8x10-9x13mm Side Drilled Pebble - 15-16 Inch Points When the level of iron

When the level of iron oxide is high

Turritella Agate is a variety of Chalcedony

Sometimes referred to as "Mutton Fat Jade" when a translucent white to light yellow

Direct from the mines

New improved softer ergo handles make crimping more comfortable

Prehnite 8x10-9x13mm Side Drilled Pebble - 15-16 Inch Points When the level of ironPrehnite 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.