This purple blue Umba sapphire holds an entire universe within. It is from our Moyo Gems Collection and was responsibly sourced from TAWOMA (Tanzanian Womens Mining Association) member, Vitalis, who mined the rough gemstone in Tanzania's Tanga region. The square cushion cut was faceted by Beth Stier in Michigan. This sapphire is a true Umba with many color variations, rutiles, and inclusions. It is not eye clean, rather full of unique color and life. No heat. Untreated.