Crystal Symmetry is the ability of a crystal to shape by nature and has a symmetrical shape. It's also referred about the occupation of diamond cutters.
Isometric
Corundum crystals belong to the ditrigonal-scalenohedral class of the trigonal symmetry D63d - R 3-C(L33L23PC) with symmetry elements: • Mirror-turn axis of the sixth order (ternary inversion axis) • Three axes of the second order normal to it • Three symmetry planes normal to the axes of the second order and intercrossing along the axis of the highest order • Symmetry center
Reflection symmetry, reflectional symmetry, line symmetry, mirror symmetry, mirror-image symmetry, or bilateral symmetry is symmetry with respect to reflection
line symmetry, rotational symmetry, mirror symmetry &liner symmetry
That depends on what you mean as a diamond. If you're referring to the simple two dimensional shape that's really just a rotated rhombus, then it has two (four if it happens to be square). If you're referring to the actual crystal then - in it's perfect form - it would be an octahedron, which has five planes of symmetry.
Crystal Symmetry is the ability of a crystal to shape by nature and has a symmetrical shape. It's also referred about the occupation of diamond cutters.
symmetry
It is a system of classification of crystals into 7 crystal systems(Cubic,Tetragonal,Othorgonal,Hexagonal,Trigonal.Monoclinic and Triclinic) on the basis of their Geometrical properties and symmetry (Diads,Triads,Tetrads,Planes of symmetry,Centre of symmetry)
It is a system of classification of crystals into 7 crystal systems(Cubic,Tetragonal,Othorgonal,Hexagonal,Trigonal.Monoclinic and Triclinic) on the basis of their Geometrical properties and symmetry (Diads,Triads,Tetrads,Planes of symmetry,Centre of symmetry)
23 symmetry elements are there in cubic system
you can determine crystal class and crystal system of a crystal from its symmetry by 3 criteria of symmetry.1.plane of symmetry:this divides the crystal into two such that one half of it is a mirror image to the other,e.g a halite(cube) has 9 plane of symmetry.(2)axis of symmetry:this is the axis about which the rotation takes place when a crystal wants to occupy position in space more than one time in a complete turn.(3).centre of symmetry:this when the like faces,edges e.t.c are arrange in pairs in corresponding position on the opposite side of the central point.
M. A. Jaswon has written: 'Studies in crystal physics' -- subject(s): Crystallography 'Crystal symmetry' -- subject(s): Mathematical Crystallography, Symmetry (Physics)
Crystal systems are the way in which unit cells are categorized according to their axial and dimensional symmetry while crystal structure refers to size, shape, and atomic arrangement within the lattice.
Crystals come in different shapes, determined by how the molecules of compounds from which they are made can be packed together. For instance a quarts crystal is hexagonal in shape, while galena and pyrites crystals are cubic. There are six different crystal shapes or forms determined by the axes and degree of symmetry of the crystal and the angles at which the axes intersect. Subordinate to the overall crystal shapes, many crystalline substances have within them planes of weakness along which the crystal may break these lines are related to the crystals symmetry and caused by how the molecules are aligned within the crystal. This is cleavage.
Isometric
One of the basis in a crystal structure is classification of solids; classification on the basis of the symmetry of crystal structures (geometrical properties) and physical features of them. In symmetric, we describe shape and arrangement crystals (s.c, b.c.c, f.c.c, h.c.p ,etc.) and in physical classification, decribe physical properties (The scheme is based on the configuration of the valance electrons. for example covalent crystal, ion crystal, metallic crystal and etc.)
in a pure C60 crystal lead to different distributions of the atomic density of the C60 molecule in the high-symmetry Fm3m phase.