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Samarskite-(Y) 4.19 ct.



61,00 €

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Samarskite-(Y) 4.19 ct.

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belong to the rare earth family and is medium to strong radioactive. A Yttrium Cerium Uranium Iron Niobium Tantalum Titanium Oxide with formula (Y,Ce,U,Fe)3(Nb,Ta,Ti)5O16 . Hardness is 5-6. It comes from the South Plate District,Colorado and is opaque with small natural pits on surface. Size:10x10x4.5 mm. Weight:4.19 ct. CODE#2440