【實用書籍app】Gemstones: Marvels of Nature & Geology|最夯免費app-綠色工廠好玩App

Hold an entire gem collection in your pocket with this great geology app! Whether you are interested in earth sciences, or precious minerals, this is a great app to add to your collection!Gemstones of the world have been prized since ancient times. Agate, Opal, Diamonds, Rubies, and Emeralds are just a few of the many minerals and gemstones found within this app. It would be a great companion to a more general mineral guide.Test your knowledge with a challenging yet accessible gemstone quiz. Can you get them all right?Gems are a beautiful and rare product of the natural world. Learn more about them with this great app!FEATURES • Challenging Quiz Game! • Hi-resolution images! • Detailed information! • Retina Ready Graphics! • Beautifully Animated Interface• Universal app, iPhone 6 ready!Creative Commons Photography Credit to:Didier DescouensRob LavinskyMary HinkleyEurico ZimbresTom Epaminondas