When titanium ring is cut too shallow, light leaks out of the bottom, brilliance is lost and the ideal cut diamond appears watery, glassy and lifeless.
diamond jewelry is the hardest of all gemstones; it is the simplest in composition; it is ordinary carbon. Colossal heat and pressure, over the eons, crystallized the ideal cut diamond into what it is today.
Up to the fourth century, loose diamonds 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.