Polished Indigo Gabbro Spheres from Madagascar
Weight: 12 ounces (average) Size: 90 - 97 mm | 3.5 - 3.8 inches
Origin: Madagascar
Grade: A Grade
Gabbro is a phaneritic, mafic intrusive ingenous rock formed from the slow cooling of magnesium rich and iron rich magma into a holocrystalline mass deep beneath the Earth's surface.
Gabbro is a phaneritic, mafic intrusive ingenous rock formed from the slow cooling of magnesium rich and iron rich magma into a holocrystalline mass deep beneath the Earth's surface.
