On first glance, you might mistaken it for amber or topaz; but the unassuming mineral speck has value beyond measure. The stone itself was purchased in 2010 at a market in Chaung-gyi in Myanmar by ...

Polished peridot Close-up. Polished brittle and hard precious mineral chrysolite with a bright sheen. A yellowish-green or brownish variety of olivine, used as a gemstone. topaz stone videos stock ...

The steps between the minerals are not evenly spaced. For example, diamond is only one number away, but it’s many times harder than gems in the corundum family. Because of its basal cleavage, topaz ...

Rocks, composed of one or more minerals, serve as Earth’s geological record. Each rock type (e.g. granite, gabbro) has a unique mineralogical composition. Studying rocks is like reading a book, as ...

The 97.45-carat Blaze Imperial Topaz is in the collection of the Field Museum of Natural History. - Courtesy "Gems and Gemstones: Timeless Natural Beauty of the Mineral World" by Grande & Augustyn, U ...

According to OGDCL the country’s vast reserves of minerals, including coal, copper, gold, iron ore, chromites, and precious ...

The Perot Museum of Nature and Science is introducing a new exhibit: Topaz: A Spectrum in Stone. The exhibit highlights the ...