By Mohsen Manutchehr-Danai
This quantity deals a one-stop connection with any topic facing gemstones, gemology, jewellery and comparable sciences. This revised and multiplied moment includes approximately 25,000 entries, a few 9,000 greater than the 1st version, that are now complemented by way of greater than 1,500 charts, diagrams and figures. It offers encyclopedic assurance of phrases, options, humans, laboratories, acronyms and locations relating to gem stones and gemology.
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Extra resources for Dictionary of Gems and Gemology
Was presented in 1954 to Queen Elizabeth II of England. Now it is mounted in a necklet with 180 diamonds and 2 other opals. Some gray to creamy colored inferior quality opals from Andamooka are artificially dyed black. Andelibi; a term used in Nishabur turquoise mine for milky stone but lesser than Soliemani. ® Turquoise classification in Nishabur, Iran. Anderson liquid; ® Anderson and Payne liquid. 81. Solved in methylene-iodide. Anderson-Payne refractometer; an official model, in which the prism incorporates all forms of spinel, sphalerite, and diamond.
Luster silky. Found in Cornwall, England. It is a mineral with associated turquoise and rashleighite. angel skin; same as angel’s skin coral. angel’s skin coral; same as pelle d’angelo. angelite; a term applied to anhydrite of bluish gray color. angelo pearl; a new or recent imitation pearl consisting of mother-of-pearl beads and covered with layers of essence d’orient or plastics. angle; any shape formed by two meeting planes or lines, commonly measured in degrees or radians. angle cutter; same as angular cutter.
The minerals are characterized by prismatic columnar or fibrous crystals. Hornblende, asbestos, and nephrite are essential amphibole minerals. Crocidolite is a blue member of asbestos amphibole mineral, which changed by oxidation to a fine golden-brown, is known as tiger’s-eye or tiger-eye. Occasionally has been silicified (pseudomorph) without alteration of the blue color, it is known as sapphire-quartz, azure-quartz, siderite, or hawk’seye, or falcon’s-eye. amphibole; a mineral of the amphibole group such as hornblende, actinolite, anthophyllite, cummingtonite, arfvedsonite, riebeckite, tremolite, glaucophane.
Dictionary of Gems and Gemology by Mohsen Manutchehr-Danai