http://bandedflint.com Banded Flint is called Polish diamond. Welcome to my jewellery blog! Wed, 10 Jan 2007 20:48:09 +0000 http://backend.userland.com/rss092 en Dietary minerals are the chemical elements required by living organisms, other than the four elements Carbon, Hydrogen, Nitrogen, and Oxygen which are ubiquitous in organic molecules. They can be either bulk minerals (required in relatively large amounts) or trace minerals (required only in very small amounts). These can be naturally occurring ... http://bandedflint.com/index.php/2007/01/10/dietary-minerals/ Minerals are natural compounds formed through geological processes. The term "mineral" encompasses not only the material's chemical composition but also the mineral structures. Minerals range in composition from pure elements and simple salts to very complex silicates with thousands of known forms (organic compounds are usually excluded). The study of ... http://bandedflint.com/index.php/2007/01/10/minerals/ Gemstones are the prettier, more expensive stones which are usually faceted and mounted into different types of jewelry or displayed on a piece of cotton or felt. The main gemstones are: diamond, ruby, sapphire, emerald, topaz, amethyst, agate, tiger's eye, jade, lapis lazuli, opal and turquoise. Of all these stones, the ... http://bandedflint.com/index.php/2007/01/10/gemstones/ Striped flint, a unique stone as hard as a diamond, cannot be found anywhere except in the Sandomierz region. Jewellery with this stone was put on display at the Regional Museum in Toruń in mid-February. “For years, striped flint was regarded as a ‘weed’ obstructing the extraction of lime. ... http://bandedflint.com/index.php/2006/12/14/polish-diamond-on-display-in-torun/ Recently i found "Striped Flint - the Polish diamond" thread on Bead Style Magazine Forum. Lovesome writes: The focal stone in this necklace is a stone that can only be found in Poland. It is very popular now, since there's not too much of it left in the mines and it ... http://bandedflint.com/index.php/2006/12/14/polish-diamond-thread-on-bead-style-magazine-forum/ Obsidian is a type of naturally occurring glass, produced by volcanoes (igneous origin) when a felsic lava cools rapidly and freezes without sufficient time for crystal growth (see glass transition temperature). It is commonly found within the margins of felsic lava flows, where cooling is more rapid. Because of the ... http://bandedflint.com/index.php/2006/12/14/obsidian/ Ferrocerium is the "flint" in lighters, and its ability to give a much larger number of sparks when scraped against a rough surface (pyrophoricity) is used in many other applications, such as clockwork toys and strikers for welding torches. Also known as Auermetall after its inventor Baron Carl Auer von ... http://bandedflint.com/index.php/2006/12/14/ferrocerium-the-lighter-flint/ Chalcedony is one of the cryptocrystalline varieties of the mineral quartz, having a waxy luster. Chalcedony may be semitransparent or translucent and is usually white to gray, grayish-blue or some shade of brown, sometimes nearly black. Other shades have been given different names. A clear red chalcedony is known as ... http://bandedflint.com/index.php/2006/12/14/chalcedony-bloodstone/ In Europe, some of the best toolmaking flint has come from Belgium (Obourg, flint mines of Spiennes), the coastal chalks of the English Channel, the Paris Basin, the Sennonian deposits of Rügen, Grimes Graves in England and the Jurassic deposits of the Kraków-area in Poland. Flint mining is attested since ... http://bandedflint.com/index.php/2006/12/14/flint-uses-history/ Flint (or flintstone) is a hard, sedimentary cryptocrystalline silicate form of the mineral quartz, categorized as a variety of chalcedony. Flint is usually dark-grey, blue, black, or deep brown in colour, and often has a glassy appearance. It occurs chiefly as nodules and masses in sedimentary rocks, such as chalks ... http://bandedflint.com/index.php/2006/12/14/regular-flint-few-words-about/