Featured this weekMineral
Glaucophane
Na2Mg3Al2Si8O22(OH)2
Glaucophane is named from a combination of the Greek words Glaukos, meaning "blue", and Phainelein, meaning "appearance", alluding to its bluish color.
Read more →More this week
Vanadinite is one of the most striking minerals, with its stunning bright-red and orange crystals that are perfectly formed and look almost surreal.
Mineral
Vanadinite
Sperrylite is a rare mineral composed primarily of the precious metal platinum.
Mineral
Sperrylite
Manganite is a mineral named for its dominating manganese content.
Mineral
Manganite
Tridymite is a rare polymorph of the mineral Quartz.
Mineral
Tridymite
Jamesonite typically forms in a unique crystal habit of fine acicular crystals that appear as woven, hair-like fibers.
Mineral
Jamesonite
Zincite is a rare mineral that is insignificant from all but one region in the world.
Mineral
Zincite
About this site
The Mineral and Gemstone Kingdom is a free informational and educational guide to rocks, minerals, gemstones, and jewelry. This site has been providing detailed information and photos of hundreds of minerals and gemstones since 1997 and is one of the leading education resources on minerals and gemstones. More →