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the result was glass permeated with thousands of tiny metallic sparkles
Labradorite is usually gray-green
Iron gives them blue
famed mineralogist and jeweler George Frederick Kunz
Emerald and Heliodore -- and is often cut to highlight its chatoyant qualities
Prehnite Natural 6X8 Pebble SD A Grade - 15-16 Inch hps_07272023 the result was glass permeatedPrehnite 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.
