Prehnite with Rutilate 8mm Round - 15-16 InchPrehnite 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.

including shiller — a sometimes iridescent bronzelike luster — in some stones

igneous rock with high silica content

A Manganese inosilicate (or chain silicate)

The Peruvian material has a lighter tone of Pink than deposits found in other parts of North and South America

pink and mauve

It has been discovered with artifacts from cultures of the Neolithic Period

Tektite is a natural glass formed by meteorite collisions with Earth

especially in Asian cultures

and originally came from much farther away

Red Australian Picture Jasper

The blue color

Porcelain Agate is a natural agate that is dyed and heated to give it the unique blue/white color and pattern that resembles porcelain