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MIG-1LB
Quantity: 1 pound
Average size range: 1 to 2 inches
Gabbro is a coarse igneous rock that cooled over long periods of time, as opposed to the related but much faster-cooled basalt. Indigo gabbro is a special kind of gabbro that also contains a wide variety of other minerals like quartz and feldspar as inclusions, giving it a more distinctive mottled appearance.