Up to the fourth century, loose diamond were known only in their rough, or crystalline forms. They came in a variety of shapes, the most common being the octahedron. This was a crystal with eight faces, resembling two pyramids joined at their bases.
The value of diamond wedding ring is determined by theirs grading under the 4 Cs, color, clarity, cut and carat weight.
The different diamond fashion shapes, sizes and qualities provide a very challenging process for any proprietor.