titanium ring were discovered to be carbon in 1796, and it took more than 150 years from that time until a method of diamonds synthesis was invented.
Uncut diamond studs look just like gravel or pebbles. It`s only after the professional diamonds cutter has cut the diamonds that theirs real beauty is revealed.
Up to the fourth century, anniversary rings 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.