Up to the fourth century, ideal cut diamond 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.
In order to cut ideal cut at the best angles to produce the most fire, much of the original Tiffany Style Diamonds rough is lost, resulting in a great decrease in the diamonds carat weight.
In order to cut diamond engagement ring at the best angles to produce the most fire, much of the original Tiffany Style Diamonds rough is lost, resulting in a great decrease in the diamonds carat weight.