Get Dictionary of Gems and Gemology PDF

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By Albert Thiele

ISBN-10: 3540282289

ISBN-13: 9783540282280

The fast progress of gemological sciences and mineralogy calls for a finished dictionary for gemologists, mineralogists, geologists, jewel buyers, undefined, and hobbyists. the second one version of this dictionary comprises approximately 25,000 entries – approximately 9,000 greater than the 1st variation. the great definitions at the moment are accomplished by way of greater than 1,500 charts, diagrams and figures. the writer deals a one-stop connection with any topic facing gemstones and gemology.

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Ani; a Sri Lankan (Ceylonese) commercial term, for pearls of fine orient, almost perfectly spherical in shape. anidiomorphic; same as xenomorphic. ani-gyi; a Burmese term used for second water corundum of pale red-crimson which are graded due to weight, for sample ani-gyi stone of 2-6 cts. o Corundum classification in Myanmar. anil; a basic compound derived from an aromatic aniline amine. anil dye; an anil compound which used as dye. aniline; an organic, colorless, oily composition of C6H5NH2, a liquid used in microscopy as an immersion medium.

This replacement needed an alkali element (monovalent) such as sodium ion or a hydrogen ion for electrical balance. During irradiation of such quartz with an impurity of aluminum one of a pair of electrons may be thrown off its position such as an oxygen ion adjacent to an aluminum. This action leaves the other electron unpaired which giving rise to a hole color center. aluminum enamel; a porcelain enameled specifically composed with aluminum oxide. aluminum gold; an alloy containing 22 % aluminum and 78 % gold, with a ruby red color.

Ambar; a Spanish term applied to Amber. Also spelled ambeur. compressing it into blocks by hydraulic pressure. Since Bronze age, it has been used as ornament and talisman cut cabochon, for beads, rosaries, and carved objects. Rarely is faceted. Sea amber occurs along certain shores, while pit amber (distinguished it from sea amber) is mined from Oligocene gravels in Myanmar (Burma) and Sicily. A variety is called muntenite from Rumania, and the variety gedanite from Poland, and Mexico. Imitations are made from kauri gum, copal, ambroid, glasses, and plastics.

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Dictionary of Gems and Gemology by Albert Thiele

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