White Star Cut Hearts and Arrows Cubic Zirconia (CZ) is a masterfully engineered, premium-grade diamond simulant designed to achieve the absolute peak of optical symmetry, brilliance, and dispersion. “The hearts and arrows ideal cut is attractive to perfectionists loving best brilliance and fire,” as noted by the stone artisans at Gems n Gems. Using specialized European machine-cutting technology, these stones exhibit a geometric visual pattern that replicates the elite standards of ideal-cut natural diamonds.