Up to the fourth century, titanium ring was known only in it rough, or crystalline forms. It 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 first thing to decide when purchasing GIA Certified Diamond is the shape of the stone. There are nine major shapes of diamonds.
Up to the fourth century, jewelry was known only in it rough, or crystalline forms. It 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.