2.50 carats of radiant-cut lab-created strontium titanate diamond simulant in 18K yellow gold over sterling silver creates earrings that combine exceptional optical performance with warm gold setting. Strontium titanate has higher dispersion than diamond - producing more rainbow-color fire per carat than any other white stone - and in the radiant cut the mixed faceting delivers that fire in a way that blends the brilliance of brilliant cuts with the depth of step cuts. In warm gold, the fire events appear richer and warmer. An earring for the customer who understands gemstone optics and wants the most visually spectacular white stone experience in warm gold.