5.15 carats Grayish Blue Spinel Stone Cushion Cut Natural Tanzanian GemstoneThis exquisite 5. 15 carats Grayish Blue spinel gemstone hails from the renowned mines of Tanzania, known for producing some of the world's finest gemstones. The stone features a mesmerizing cushion cut, which enhances its natural brilliance and rich color. The deep gray blue hue of this spinel is both intense and captivating, making it a rare and valuable piece for any gem collector or jewelry enthusiast. Its clarity and luster further add to its