  Jet Lignite.
Description from the source:
Lignite var. Jet (Gagate, Giaietto), Ucraina. In reality not a mineral, but a significative example for the C, with a value because used in gemmology. 3,1x2x2 cm; 4 g.
Source: Simone Citon
Contributor: John Gray
Acquired: 26 September, 2008
Text Updated: 28 September, 2008
Price: Trade
Size: 1.25"
Composition: C
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