Prehnite 8mm Round AAA Grade - 15-16 Inch AA Gade where it was mined since

where it was mined since around 300 BCE

Its needle to like inclusions of hematite are iridescent red

It is a white granite with dark gray mottling that also exhibits blue or green spots

more commonly referred to as simply Australian Opal

Red Garnet and Crystal Quartz

Prehnite 8mm Round AAA Grade - 15-16 Inch AA Gade where it was mined sincePrehnite 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.