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Wednesday, November 20, 2019

Read Tourmaline Gemstones - A Collection of Historical Articles on the Origins, Structure and Properties Online



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Tourmaline History and Lore All About Gemstones GIA ~ In the late 1800s tourmaline became known as an American gem through the efforts of Tiffany gemologist George F Kunz He wrote about the tourmaline deposits of Maine and California and praised the stones they produced In spite of its American roots tourmaline’s biggest market at the time was in China

Customer reviews Tourmaline Gemstones A ~ Find helpful customer reviews and review ratings for Tourmaline Gemstones A Collection of Historical Articles on the Origins Structure and Properties of Tourmaline at Read honest and unbiased product reviews from our users

Tourmaline History Sources and Origin Featured Gemstone ~ In fact tourmaline was the first gemstone mined in the United States by miners other than prehistoric man or Native Americans Tourmaline mining began at Mount Mica Maine and with a few interruptions has continued to the present day During the early 1900s Maine and California were the worlds largest producers of tourmaline gemstones

The Definitive Tourmaline Buying Guide ~ Tourmaline is a strongly dichroic gemstone and as such the optic axis and the perpendicular axis can show different colors Tourmaline displaying dichroism This effect can create stunning colors faceup especially under different light sources as this stunning Tourmaline demonstrates –blue and green clearly visible

Tourmaline Most Colorful Mineral in the World ~ Tourmaline is a beautiful gemquality stone that comes in a widespectrum of colors and shades Mines in the United States have often supplied much of the world’s tourmaline and the State of Maine named tourmaline its official state stone in 1971 7 With multiple colors and a transparent face

The History Behind the Worlds Most Coveted Gemstones ~ The History Behind the Worlds Most Coveted Gemstones 09282017 I By James Gillis For a great many people a single gemstone alone is enough to provide the highest and most perfect aesthetic experience of the wonders of nature

The Rainbow Gemstone 4 Fast Facts About Tourmaline LEAFtv ~ Tourmaline which means mixed gems in Sinhalese is considered one of the most colorful gemstones While it can be found all around the world the prime locations to unearth this gem include Afghanistan Russia Burma the United States California and Maine Madagascar and more It has a rich history that even includes a magical legend

Tourmaline Gemstones Buy Loose Tourmaline Tourmaline ~ Tourmaline History Tourmalines are gems with an incomparable variety of colours The reason according to an old Egyptian legend is that the Tourmaline on its long journey up from the centre of the Earth passed over a rainbow In doing so it assumed all the colours of the rainbow

ANCIENT HISTORY OF THE GEM STONE ~ Gem tourmaline occurs in pink red blue colorless brown reddish violet yellow and green It is a complex silicate of sodium aluminum beryllium hydrogen and iron Variations in the amounts of these elements plus additions or substitutions of lithium magnesium or calcium account for the wide range of colors

Tourmaline Wikipedia ~ The most common species of tourmaline is schorl the sodium iron divalent endmember of the may account for 95 or more of all tourmaline in nature The early history of the mineral schorl shows that the name schorl was in use prior to 1400 because a village known today as Zschorlau in Saxony Germany was then named Schorl or minor variants of this name and the village had a


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