Mineralogy

Fluorite Ice Cleft Weisseck North Face, Lungau, Salzburg, Austria 9.5 x 7.8 x 4.6 cm

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Bi-color Tourmaline in Matrix -- Paraiba, Brazil

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Fluorite w/ Milky Quartz -- Huanggang,Inner Mongolia,China

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Rhodochrosite - N`Chwaning Mines, Kuruman, Kalahari manganese field, Northern Cape Province, South Africa

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Fluorite avec Chalcopyrite. Saxe, Allemagne FOV=16 mm Photo Mark Wrigley

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13417615_509484159235901_751591329068258499_n.jpg (540×461)

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An asterism is an optical phenomenon displayed by some rubies, sapphires, and other gems

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