Download or read book Eye Wonder: Rocks and Minerals written by DK and published by Penguin. This book was released on 2008-12-12 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Eye Wonder Rocks and Minerals introduces geologic elements to budding scientists - Did you know that the amount of gold in any material is measured in carats and that 24-carat gold is pure gold? Find out facts like this and much more in this fascinating guide to rocks and minerals.