The world’s biggest ruby to appear at auction will be sold at Sotheby’s Magnificent Jewels sale in New York on June 8 at a momentous occasion for the gemstone business. The Estrela de FURA, weighing an incredible 55.22 carats, is estimated to garner more than $30 million, making it the most precious ruby ever sold at auction. The ruby was cut and polished from a raw 101-carat stone unearthed in a ruby mine in Mozambique by FURA Gems, a Dubai-based colored gemstone mining and marketing firm. The Estrela de FURA is likely to challenge the world record for any ruby ever sold at auction, thanks to its intense richness of color and unparalleled size.