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Gabbro – Indigo Merlinite

gabbro point specimen

The term “gabbro” was used in the 1760s to name a set of rock types that are in the ophiolites of the Apennine Mountains in Italy. It was named after Gabbro, a hamlet near Rosignano Marittimo in Tuscany. Then, in 1809, the German geologist Christian Leopold von Buch used the term more restrictively in his description of these Italian ophiolitic rocks. He assigned the name “gabbro” to rocks that geologists nowadays would more strictly call “metagabbro” (metamorphosed gabbro).

Much of the Earth’s oceanic crust is made of gabbro, formed at mid-ocean ridges and often contains valuable amounts of chromium, nickel, cobalt, gold, silver, platinum, and copper sulfide.

Gabbro is known in the construction industry by the trade name of black granite. However, gabbro is hard and difficult to work, which limits its use.

The term “indigo gabbro” is used as a common name for a mineralogically-complex rock type often found in mottled tones of black and lilac-grey. It is mined in central Madagascar for use as a semi-precious stone. Indigo Gabbro can contain numerous minerals, including quartz and feldspar.

Indigo Gabbro, aka Mystic Merlinite, is often confused with Merlinite and Blizzard Stone, however they are not the same crystal.

Indigo Gabbro, a black crystal with grey splotches, has a lavender tinge under the sunlight. When polished, Indigo Gabbro is really nice and shiny and is nicknamed the ‘wise soul’ because it can dig up your deep-rooted issues in your innermost self.

Blizzard Stone, is a form of Gabbro that is black with white specks, however it is still different to Indigo Gabbro and is not shiny when polished.

Meanwhile Merlinite, AKA Dendritic Agate, is a white crystal with black patterns that resemble tree branches (and is not a form of Gabbro).

This stone will help you deal with these issues with strength, courage, and love!

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