Shop our Round Brilliant Cut Diamonds collection. Our curated collections feature only the best in fine jewelry and luxury decor for the modern woman. Explore an assortment of antique, vintage, and contemporary designs that are the epitome of timeless style and laid-back luxury. The Round Brilliant is all about high shine and serious sparkle. The shape's 58 specific facets across the pavilion, the crown, and the girdle refract the light from beneath the stone, giving it the fiery brilliance for which it is named.