Featured this weekGemstone
Golden Beryl
Be3Al2Si6O18
In the images below, we are noting a distinction between Golden Beryl which contains a bright yellow color, and Heliodor, which has a greenish hue to it. However, the names are often interchangeable so either term is technically acceptable.
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Sylvanite is a unique mineral that forms with both gold and silver in its structure.
Mineral
Sylvanite
Hauyne forms a solid solution series with Lazurite, essentially sharing the same chemical formula, but with a variation of sulfide over sulfate.
Mineral
Hauyne
Dioptase is a brightly colored mineral, highly desired for its intense green color.
Mineral
Dioptase
Sanidine is polymorphous with Orthoclase and Microcline. These three minerals form the Potassium Feldspar group.
Mineral
Sanidine
Stilbite is a common member of the zeolite group, and is found in most of the world's important zeolite deposits.
Mineral
Stilbite
Otavite is named after the famous mineral deposit of Tsumeb, in Otavi Province, Namibia.
Mineral
Otavite
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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 →