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Indialite 0.74 ct.



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Indialite  0.74 ct.

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A massive pale reddish-brown of pure microcrystalline Indialite. This material is probably the richest Indialite ever found.

Formed by fusion and recrystallization of sedimentary rocks as a result of the burning of underlying coal seams. High temperature polymorph of cordierite.Hardness is 7-7.5.Formula Mg2Al4Si5O18 .

From Durham Ranch, Wright, Reno Junction, Campbell Co., Wyoming / USA

Size: 7.5x4.5x4.1 mm.

Weight: 0.74 ct.



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