More than 4,000 naturally occurring minerals—inorganic solids that have a characteristic chemical composition and specific crystal structure ... development and form natural resources such ...

These minerals are often particularly sensitive when exposed to ultraviolet (UV), blue light or inappropriate relative humidity. 'Many people think that because rocks are usually hard and have lasted ...

Quasicrystals are like ordinary crystals but with a few key differences. A traditional crystal is any solid made of atoms or molecules in repeating patterns. There are only 230 possible ways for atoms ...

For its pale translucence, this crystal form of the mineral gypsum is known ... the Janet Annenberg Hooker Hall of Geology, Gems, and Minerals at the Smithsonian’s National Museum of Natural ...

If you’ve recently been passed down a family member’s glassware collection, you might be curious about some of the pieces ...