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Characteristics and classification. A collection of gemstone pebbles made by tumbling the rough stones, except the ruby and tourmaline, with abrasive grit inside a rotating barrel. The largest pebble here is 40 mm (1.6 in) long. The traditional classification in the West, which goes back to the ancient Greeks, begins with a distinction between ...
GEMS Education, founded as Global Education Management Systems (GEMS), is an international education company. It is one of the world's largest private school operators, [1] and as of late 2022 it operates more than 60 schools across the Middle East and North Africa, and also has schools in Asia, Europe, and North America. [1]
Gemporia US (formerly known as Rocks TV) is a former American reverse auction jewellery shopping channel which formerly was carried on American cable and satellite providers. The channel was launched on July 12, 2012, as Rocks TV, and operated from the United Kingdom from Gemporia's studios in Redditch, sharing Gems TV personnel.
Website. www .gia .edu. The Gemological Institute of America ( GIA) is a nonprofit institute based in Carlsbad, California. It is dedicated to research and education in the field of gemology and the jewelry arts. [1] Founded in 1931, GIA's mission is to protect buyers and sellers of gemstones by setting and maintaining the standards used to ...
An uncut, rough yellow sapphire found at the Spokane Sapphire Mine near Helena, Montana. Sapphire is one of the two gem-varieties of corundum, the other being ruby (defined as corundum in a shade of red). Although blue is the best-known sapphire color, they occur in other colors, including gray and black, and also can be colorless.
The public system serves the vast majority of the population. Authority and service delivery are divided between the national Department of Health, provincial health departments, and municipal health departments. [1] In 2017, South Africa spent 8.1% of GDP on health care, or US$499.2 per capita.
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New York City. , New York. , United States. Website. www .gemscience .net. Gemological Science International, or GSI, is an independent gemological organization that is one of the largest gemological entities in the world, with offices in four continents. [1] [2] [3]