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veins and brecciated patterns
not angled
and it has been used throughout history for various purposes
The blue colors are photosensitive and may fade when exposed to excessive light or heat
it is a form of hydrated amorphous silica
Prehnite 6mm Round AAA Grade - 15-16 Inch Calligraphy Stone veins and brecciated patternsPrehnite 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.
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