Up to the fourth century, diamond fashion 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.
When looking at the general appearance of fancy Tiffany Style Diamond, make sure that the stones are appealing to your eye and that their are bilaterally symmetrical.
The round Tiffany Style Diamonds - cut is also popular so much so that it is often wrongly named as beeing brilliant cut.