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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 ]
In 1953 the GIA developed its International Diamond Grading System and the "four Cs" (cut, clarity, color, and carat weight) as a standard to compare and evaluate the quality of diamonds. [ 2 ] As of 2024, the institute is headquartered in Carlsbad, California , and operates in 13 countries, with 11 campuses, 9 laboratories, and 4 research centers.
International Gemological Institute (IGI) is a gemological organization which certifies diamond, colored stone and jewelry. It was established in 1975 in Belgium. It was established in 1975 in Belgium.
Gemology or gemmology is the science dealing with natural and artificial gemstone materials. It is a specific interdisciplinary branch of mineralogy . Some jewelers (and many non-jewelers) are academically trained gemologists and are qualified to identify and evaluate gems.
The assessment department focuses on assessing the quality of Wikipedia's Gemology and Jewelry articles. While much of the work is done in conjunction with the WP:1.0 program, the article ratings are also used within the project itself to aid in recognising excellent contributions and identifying topics in need of further work.
Area code Established Region Map Reference 205/659: 1947 November 12, 2019 Area code 205 covers the central and west central portions of the state including Birmingham, Tuscaloosa, Hoover, Northport, Jasper, Oneonta, Clanton, and Pell City. Covered the entire state before the creation of Area code 334. Area code 659 is an overlay of 205.
SMART-Center (Science, Math, Art, Research, and Technology) [6] Wheeling: West Virginia: No No Yes No SMUD Museum of Science and Curiosity (MOSAC) [5] [6] Sacramento: California: No Yes Yes Yes Sony Wonder Technology Lab: New York: New York: No No No No South Dakota Discovery Center [6] Pierre: South Dakota: No No Yes Yes Southern Museum of ...
Mineralogy applies principles of chemistry, geology, physics and materials science to the study of minerals. Mineralogy [n 1] is a subject of geology specializing in the scientific study of the chemistry, crystal structure, and physical (including optical) properties of minerals and mineralized artifacts.