A 4.95 carat heptagon cut lab-created strontium titanate with 0.49 carats of round white zircon in 18K yellow gold over sterling silver ring - the diamond simulant ring in the unusual heptagon cut. The heptagon is a seven-sided polygon - a rare cut that creates an angular, multifaceted stone with a geometric character distinct from all standard cuts. Diamond simulant (lab-created strontium titanate) produces more spectral fire than diamond. In warm gold with white zircon accents. Not sizeable.