A pink diamond of "unparalleled color and brightness" is expected to fetch over $35 million when it goes on sale in New York, auction house Sotheby's announced. Weighing 10.57 carats and named The Eternal Pink, the "ultra-rare" gemstone will go under the hammer this June, four years after South African firm De Beers discovered it at one of its mines in Botswana. Officially classed as "purplish pink" in color, it is the most valuable diamond of its shade ever to appear at auction, according to Sotheby's. Read more about the rare diamond at the link in our bio. 📸: Sotheby's