Shungite
Shungite is a particularly hard variety of Jet found only in Russia. Jet and Shungite are petrified coal; noncrystalline carbon with a metastable structure incapable of graphitization. Hardness 4 on the Mohs scale.
$8.00
$40.00
$3.50
Shungite
$8.00
$78.00 – $92.00
$45.00
$28.00 – $52.00
$55.00 – $75.00
$35.00 – $350.00