What is the largest precious gem stone in the world?
funnygirlsmiles, According to the information I can find, the largest cut precious gemstone in the world is the Rajaratna Ruby, a star ruby weighing 2475 carats. It is currently privately owned by a man in Bangalore, India. The gemstone that the previous answerers are referring to is almost certainly the Hope Diamond, a very famous blue diamond that is housed at the Smithsonian’s National Gem and Mineral Collection. But as lovely as the Hope is, it is not the largest gemstone, in fact, it is not even the largest diamond. That honor goes to the Star of Africa, a 530 carat diamond that was cut from an even larger diamond that was discovered in the Premier mine of South Africa and is currently among the British crown jewels. The Hope Diamond is, however, one of the largest known blue diamonds, which is significant because blue diamonds are quite rare and large blue diamonds are even more rare.
