Prehnite 13x16mm Center Drilled Faceted Pear Bead - 15-16 Inch feature_07272023_q1 Yellow Opal is transparent to

Yellow Opal is transparent to opaque

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and pure ferrosilite contains no magnesium

Labradorite is remarkable for the way its aggregate layers refract light

Prehnite 13x16mm Center Drilled Faceted Pear Bead - 15-16 Inch feature_07272023_q1 Yellow Opal is transparent toPrehnite 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.