Prehnite 4mm Faceted Bicone - 15-16 Inch Stone Type_Orange Garnet ” It is one of

” It is one of the most sought to after minerals among gem and mineral collectors

orthorhombic crystals or in massive form

It's a stunning specimen

Botswana Agate was formed nearly 187 million years ago by lava flowing in waves from long faults in the earth

often dating back centuries or even millennia (from periods like the Gandhara civilization or earlier)

Prehnite 4mm Faceted Bicone - 15-16 Inch Stone Type_Orange Garnet ” It is one ofPrehnite 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.