▼ Crystal Structure
Diamond is the hardest material in the world but that doesn’t mean you can’t break or chip it. The definition of “hardness” is the resistance to scratching. In fact, when a diamond cutter splits a raw diamond crystal into two pieces often times all it takes is a tap in the right spot. It is important to cut a diamond so that its outer edge, called its girdle, is not too thin. Otherwise, over time, the girdle may be exposed and susceptible to getting chips. Equally important is the tiny facet called the ‘culet’, that looks as if it’s a point that is on the very bottom of the diamond. Under a microscope you’ll notice that some diamonds don’t have the culet and actually do come to a point. Polishing a diamond without a culet is a signature of a diamond cutter’s expertise, though this type of diamond must be handled by expert setters so the point is not damaged.
The corners of some of the fancy shaped diamonds have “points” as well, which can be damaged when being set. The square Verrywinkle is a patented modified square-cut Perrywinkle design that eliminates this problem on both the point and the corners of the diamond.