This rock can be found in different parts of the world, ... It’s about as hard as a 7 to 7.5 on the Mohs hardness scale, which measures how well minerals resist being scratched.

But Sharygin explained that the Mohs scale has a wide range between 9 and 10. All mononitrides fall at this end of the scale, he said, "but their hardness is lower than [that of] a diamond." ...

VANCOUVER, Canada / ACCESSWIRE / June 17, 2014 / Alabama Graphite Corp. (the "Company") (TSX-V: ALP) (OTCQB: ABGPF) (FRANKFURT: 1AG WKN: A1J35M) (ISIN# CA0102931080 ...