2.55 carats of rectangular octagonal lab-created strontium titanate diamond simulant in 18K yellow gold over sterling silver earrings brings the highest-fire white stone into a geometric cut that displays its exceptional dispersion in architectural mode: the rectangular octagonal's step-and-brilliant hybrid faceting creates both the linear reflections of step cuts and the fire events of brilliant cuts simultaneously. In warm gold, the rainbow-color events that strontium titanate produces appear at their warmest and most vivid. A bold, architecturally considered earring for the customer who appreciates both optical science and geometric design.