Crystal, dodecahedron, octahedron, maccle … This is just how we’ve been describing several of the new stones top top our website lately. If you’re no a gemologist, it more than likely hasn’t meant much to you, so us asked our in-house GIA certified gemologist Rachel Kaminetsky come give summary of the different shapes the diamonds, and also how specific physical qualities are described.

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First of all, all crystals room classified follow to the interior structure and arrangement the the atom that create them. Diamond belongs to the cubic crystal system, i m sorry is the many symmetrical of crystal systems. The basic crystal shape, or habit, the diamond is the octahedron; a type with eight equal triangular sides, looking prefer two pyramids connected at the base.


Octohedrons from the Mir Mine in Russia.

Other forms of diamonds space the cube (6 same square sides, or faces) and also the dodecahedron (12 same “diamond” or rhombus-shaped sides).


Dodecahedron sourced indigenous Canada.

Rough diamonds are uncovered in a wide variety of shapes and also appearances, although your internal setup remains orderly and also symmetrical. However, during formation, conditions surrounding the diamond might change, leading to a change in direction that the stacking atoms, and resulting in some distinct features.

Parallel grooves, trigons, which room triangular depressions, or cubic faces, which room square or rectangular depressions room all examples of growth marks.


Diamond crystal displaying trigons top top its surface.

See more: The Maximum Number Of Orbitals Possible In 4F Is, Summary Of Electron Configurations

Twinned crystals, such together maccles (the flat, triangular diamond crystals) room the an outcome of a decision distorted during growth. They have two opposing decision directions, making that a difficulty for diamond cutters, who are “dictated” exactly how a diamond may be cut by the internal structure of the gem. However, for designers who choose using rough, all these features may attitude a beautiful and also unique feature in a among a kind creation.

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