THE FOUR C'S: CUT
There are many factors that determine a diamond’s brilliance, the most important of which is its ability to reflect light. As a diamond is moved through a light source, tiny flashes will be visible within the stone. Commonly known as sparkle, this is also referred to as scintillation, an effect of the stone’s reflection and refraction of light.
Round diamonds have long been the most popular, although many modern consumers prefer alternative shapes, including emerald, princess, radiant, and asscher, among others.
With modern diamond-cutting techniques, there are two common methods of cutting facets, each with its own unique light reflection properties:
In this approach, the facets are elongated and placed in rows to simulate a mirrored staircase.
This technique creates triangular-shaped facets that face outwards from the center of the diamond.