Dunite originates from the mantle and is a very dense igneous ultra-maffic rock that comes in a rich variety of green colors.  Though highly fractured, this piece shows some stunning deep greens that can be found in dunite.  The dark specks of chromite ad interesting patterns and contrast to an already beautiful stone.

Rock type: Dunite, Igneous/Plutonic

Dunite is mostly olivine (~90+%) with other minerals such as chromite, magnetite, pyrope.  This piece contains chromite.

Olivine chemical composition: (Mg,Fe)2SiO4