One Face Polished Indigo Gabbro Slab

Indigo Gabbro is also known by the trade name Mystic Merlinite (not to be confused with Merlinite, which is a trade name for Dendritic Opal), and is found in Madagascar and Alaska. Gabbro refers to a group of coarse-grained igneous rock made mainly of quartz and feldspar, and Indigo Gabbro is a special form that has a certain coloration.