Cut however is not shape. The shape is merely an after effect of the cut. The cut is the manner in which geometry, light and shape all mix together to unearth the brilliance that is found in the diamond. Lighter diamonds tend to be more brilliant than bigger ones. This is because the amount of rigor that is made to cut and shape is more meticulous than just merely cutting into the surface. Cutting is a science and an art at the same time. The cut of the diamonds in engagement rings affect the brilliance, the fire and the scintillation of the diamond. The brilliance is the external and internal reflection of white light to the eyes, making the diamond very vibrant and pure. The fire is the interplay of the geometry as it refracts and disperses white light into various colors, bringing dynamic color appeal to the diamond. The scintillation of the diamond is the sine or glow as you move it and as you look at the diamond all over.