IFLScience on MSN22 天
What's The Difference Between A Mineral, A Crystal, And A Gemstone?
You can get a good idea of a crystal's structure by looking closely ... so the pearl can't be a mineral. Some gemstones are ...
来自MSN2 天
What's the difference between a rock and a mineral?
"It's kind of like atoms in a molecule, so minerals are the atoms." Each type of mineral has a unique crystal structure, which results from its chemical composition and a set of physical properties, ...
National Geographic news7 年
Minerals and Gems
More than 4,000 naturally occurring minerals—inorganic solids that have a characteristic chemical composition and specific crystal structure ... or by separating out of mineral-rich water ...