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Columbite 7.73 ct.

#3840

New

150,00 €

1 left in stock

Columbite  7.73 ct.

More details

 Columbite (Mn)

is a general name for a combination of Niobium and Tantalium ,more information on http://www.mindat.org/min-1514.html

is a metallic black stone with hardness of 6 and takes a good polish.

It comes from Eight Miles Park District,Fremont County,Colorado.

Size:10x10x6.5 mm.

Weigth: 7.73 ct.

CODE#3840

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