Prehnite with Rutilate 10mm Round - 15-16 Inch Shape_Cut Cube Opalite can have a blue

Opalite can have a blue appearance when placed against a dark background and appear milky white with a pink or orange glow against a light background

This stone is composed of angular fragments of minerals

often with a mottled appearance

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

a mineral of the Quartz family

Prehnite with Rutilate 10mm Round - 15-16 Inch Shape_Cut Cube Opalite can have a bluePrehnite 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.