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Ludwigite 4.50 ct.



45,00 €

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Ludwigite  4.50 ct.

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is a magnesium -iron borate with formula Mg2FeBO5 and hardness of 5.5.

Is a rare mineral and it comes from a famous location in Italy: the old mines of Brosso, Piedmont.

Always opaque with a radial structure and the color is dark green-black with strypes silver-grey.

Size:8x8x5.5 mm.

Weigth:4.50 ct.