Polished Indigo Gabbro Spheres from Madagascar
Weight: 14 ounces (average) Size: 64 - 68 mm
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.
