Beryl is a mineral composed of beryllium aluminium.
Beryl, topaz and tourmaline also have very different crystal systems and formations. Tourmaline's crystal structure is usually heavily striated; topaz has perfect cleavage and eight-sided striations, whereas beryl has a distinct six-sided hexagonal crystal structure which makes it very easily identifiable. Transparent specimens are referred to as 'precious beryl'. The most famous member of the beryl family is green emerald, followed secondly by blue aquamarine. Even though beryl is one of the most important mineral groups, golden beryl is not very well-known by the general public. The green beryl gemstone differs from the similarly created emerald in its very pale shade of green. This type of gemstone can be located in a variety of countries including Southern Africa, South Africa, South America, Pakistan, Afghanistan, the Ural Mountains of Russia, as well as India. The green beryl is a popular gemstone because of its beautiful color and luster, as well as other factors. This gemstone is rated between a 7.5 and 8 on the Mohs scale for its level of hardness. This level of hardness in a gemstone is sought after because it is easy to use in many different jewelry applications. Only green Beryl with a deep green color is called Emerald; light green Beryl is simply  Green Beryl  (or Heliodor if it has a yellowish color.). Aquamarine, another important gemstone, is the greenish-blue to blue variety of Beryl. Pure Beryl is colorless. However, a wide range of impurities cause the diverse amount of colors and many varieties. The green color in Emerald is usually caused by traces of the element chromium, and the blue color of Aquamarine usually by iron. Green Beryl Gemstones. Not to be referred to as the Emerald, Green Beryl is more of a pale variety and is not worth as much as the Emerald. Found in places such as South America, Russia, Pakistan, India, and more, this gemstone offers a hardness range of 7.5 to 8, making it fairly resistant to things like corrosion. The green beryl is a popular gemstone because of its beautiful color and luster, as well as other factors. This gemstone is rated between a 7.5 and 8 on the Mohs scale for its level of hardness. This level of hardness in a gemstone is sought after because it is easy to use in many different jewelry applications. Below is a gallery of Gem Mineral specimens for sale from John Betts-Fine Minerals in New York City, NY. Included in this group are Tourmaline (rubellite, elbaite, indicolite), Beryl (aquamarine, heliodor, morganite, emerald), Spodumene (kunzite, hiddenite), Opal, Diaspore, Topaz, Corundum (sapphire, ruby) . These are natural crystals of minerals that are used as gemstones-they are usually not gem grade. The gem mineral in this gallery are from worldwide locations including: Brazil, Australia, Namibia, Kenya, Russia, Connecticut, Maine, New Hampshire, Afghanistan, Pakistan, California, Mexico, Tajikistan. To purchase mineral specimens, go to the Online order form. ABSTRACT ! The Crabtree pegmatite in the Spruce Pine district of North Carolina is a beryl (emerald, green beryl, aquamarine and yellow beryl) and tourmaline-bearing granitic pegmatite. Na2O concentration is markedly higher in the green beryl over the yellow beryl or the emerald and is typically 1.2 to 1.4 wt%. MgO concentration ranges from 0.20 to 2.3 wt % with green beryl typically having the highest values of 1.4 wt%. Beryl Color Precious beryl occurs in a variety of colors. The greenish-yellow colored variety is referred to as heliodor or golden beryl. Golden beryl is the most common gem-quality variety of beryl. Colors range from vivid lemon-lime to pale greenish-yellow to golden in color. Golden beryl, or heliodor, owes its color to iron impurities. Transparent specimens are referred to as 'precious beryl'. The most famous member of the beryl family is green emerald, followed secondly by blue aquamarine. Even though beryl is one of the most important mineral groups, golden beryl is not very well-known by the general public. If you decide to give beryl or tourmaline as a 38th wedding anniversary gift, you will be enhancing the celebration with sparkle, color, and beauty. 1  Emerald: this highly valued stone known throughout the world for its striking green color is actually a form of beryl. 2  Aquamarine: blue. Tourmaline. Tourmaline is another impressive choice for a 38th wedding anniversary gift. This precious stone is referred to as the rainbow gemstone, due to its rare and varied colors. With its name derived from the Singhalese words tura mali, meaning stone of mixed colors, it is prized for its unlimited color range. In geology, beryl is a mineral composed of beryllium aluminium cyclosilicate with the chemical formula Be 3 Al 2 Si 6 O 18. The hexagonal crystals of beryl may be very small or range to several meters in size. Terminated crystals are relatively rare. Pure beryl is colorless, but it is frequently tinted by impurities; possible colors are green, blue, yellow, red, and white. Morganite, also known as pink beryl, rose beryl, pink emerald, and cesian (or caesian) beryl, is a rare light pink to rose-colored gem-quality variety of beryl. - Pale green variety of Beryl. Green Beryl is distinguished from Emerald which is deeper green, and from Heliodor which is greenish-yellow to yellow. Many authorities don't recognize Green Beryl as a variety and just include it as a form of Heliodor. Pure Beryl is colorless. However, a wide range of impurities cause the diverse amount of colors and many varieties. The green color in Emerald is usually caused by traces of the element chromium, and the blue color of Aquamarine usually by iron.
http://www.gemselect.com/gem-info/beryl/beryl-info.php http://www.paraibainternational.com/products.php?category=34 http://www.minerals.net/mineral/beryl.aspx http://www.paraibainternational.com/products.php?category=34 http://www.johnbetts-fineminerals.com/jhbnyc/gemstone.htm http://www.academia.edu/6870797/Beryl_Aquamarine_Emerald_Green_and_Yellow_and_Tourmaline_of_the_Crabtree_Pegmatite_Spruce_Pine_District_Mitchell_County_North_Carolina http://www.gemselect.com/gem-info/beryl/beryl-info.php http://www.weddingclipart.com/guide/wedding-gifts/anniversary-gifts/38th-anniversary-gifts.html https://en.wikipedia.org/wiki/Beryl http://www.minerals.net/mineral/beryl.aspx
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