A volcanic stone from Madagascar. Indigo Gabbro is a plutonic rock that forms deep in the Earth's and Oceanic crusts from high pressure and cooled magma throughout the stone are irregular shaped areas of black Pyroxene surrounding gorgeous green centers of Olivine. There are even some flashes of shimmering Muscovite mica throughout the stone.
(1) One rough Indigo Gabbro will be intuitively chosen for you, each crystal will very slightly in colour and size. Rough Indigo Gabbro Stones are approximately 1-1.5 inches long.