Dictionary of Gems and Gemology by Albert Thiele

By Albert Thiele

The quick development of gemological sciences and mineralogy calls for a accomplished dictionary for gemologists, mineralogists, geologists, jewel buyers, undefined, and hobbyists. the second one variation of this dictionary comprises approximately 25,000 entries – approximately 9,000 greater than the 1st version. the great definitions are actually accomplished by means of greater than 1,500 charts, diagrams and figures. the writer bargains a one-stop connection with any subject facing gemstones and gemology.

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Amber Room; a room was made of amber in 18th century for Fredrick the Great was presented to Czar Alexander of Russia. Present whereabouts unknown, Russia? Also called Amber Chamber. amber salt; same as succinic acid. Amber Schöppen; Schöppen is German term for amber catcher. amber sorting, rough; rough amber were sorted in three categories according to color, form and dimension: (I) large piece, flat and mostly cloudy with the name tiles and plates, used as smoking artifacts. (II) Round piece, opaque tears, frequently flattened bottom used to make smoking artifacts and gems.

O Breastplate. amethyst, zebra stripes in; a typical liquid-filled ducts zebra or tiger stripes in amethyst inclusion in parallel arrangement with a structure appear as striations similar to zebra or tiger stripes, which may occur due to some kind of growth disturbance or pressure may caused internal shearing. ametrine; a combined term used for violet and yellow striped amethyst-citrine, which grows together, found only in Anahi Mine, Bolivian. Used as a gemstone. amherst stone; o blue stone. amianthus; ancient name for long, fine silky fibered variety of asbestos such as chrysotile.

Amarantsteen; a rarely used Dutch term for aquamarine emerald. amarud; French term for aquamarine emerald. 37 cts, found in 1975, at the crater of Diamonds State Park, Arkansas. Is named after Amarillo a town in Texas, USA. amarillo stone; a term applied to figured chalcedony, from Texas. amaryl; a commercial term for light green, synthetic corundum, named as such become similar to leaves of an amaryllis. In South Africa, named belladonna lily. amas; a Japanese term for girls who dive to fish pearl oysters.

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