Celestial Citadel – Vivid Blue Sapphire & Diamond Halo Convertible RingCelestial Citadel is defined by its Royal Blue Natural Sapphire and architectural diamond halo. The design feels strong, luminous, and regal, with an oval sapphire center framed by round and tapered baguette diamonds that give the ring its citadel like structure. The sapphire brings depth, loyalty, and refined color to the center, while the diamonds add brilliance and geometric balance around it. Set in 18K White Gold, the ring carries a crisp