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A rhombic dipyramid (8-faced form) exhibits several symmetry elements, including a center of symmetry, three mirror planes and three 2-fold rotation axes. The mirror planes and 2-fold rotation axes are perpendicular to each other and align along the crystallographic axes (a, b, c). All planes and rotation axes intersect at the center of the crystal, which is also the location of the center of symmetry. The rhombic dipyramid is a typical crystal form within the orthorhombic crystal system.