Diamonds, rubies, sapphires, pearls, and opals are among the most precious stones found under the earth. Whether ornamenting royal scepters or equipping modern medical technology, this new book will show readers how these stones have an established place in our world. Other features in Diamonds and Gemstones are: - where diamonds and gemstones are found and how they are mined - famous diamonds, including the Cullinan diamond and the curse of the Hope...