Over 1,400 specimens. Discover what gems are, how they are classified and named, their physical properties, and how they are cut and polished. More Details  Similar Titles
GALILEO`S FINGER charts the 10 greatest scientific discoveries over the past 400 years. Atkins, a professor of chemistry at Oxford University, begins ... Read more  Similar Titles
GALILEO`S FINGER charts the 10 greatest scientific discoveries over the past 400 years. Atkins, a professor of chemistry at Oxford University, begins ... Read more  Similar Titles