Emerald

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Emerald is a gemstone, a mineral variety of beryl with colouring ranging from green to blue-green and is composed largely of silicon, vanadium, aluminium and oxygen. It has an octahedral conformation and the cell edge, on the a-axis, is elongated. It formed over time by epitaxial nucleation on shales with aluminium, beryl and alkali. Safety...

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by admin (19675 pt) · 2022-Dec-18

Emerald è una pietra preziosa, una varietà minerale di berillo con colorazione che varia da verde a blu-verde ed è composto in gran parte da silicio, vanadio, alluminio e ossigeno. Ha una conformazione di tipo ottaedrico e il bordo cellulare,...

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Last update2022-12-18 12:00

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