Search results
Results from the WOW.Com Content Network
In 1986, California named benitoite as its state gemstone, a form of the mineral barium titanium silicate that is unique to the Golden State and only found in gem quality in San Benito County. [80] ^ Colorado is the only state whose geological symbols reflect the national flag's colors: red (rhodochrosite), white (yule marble), and blue ...
The Ada Arts and Heritage Center is a Colonial Revival styled building located at 400 South Rennie Street in Ada, Oklahoma. The building was listed on the National Register of Historic Places as Ada Public Library in 1989. [1] The building was built in 1939 to serve as the public library of Ada. In 1981, having outgrown this original building ...
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 ...
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Donate; Pages for logged out editors learn more
Gemology. Gemology or gemmology is the science dealing with natural and artificial gemstone materials. It is a geoscience and a branch of Stoneology and mineralogy. Some jewelers (and many non-jewelers) are academically trained gemologists and are qualified to identify and evaluate gems. [1] [2]
Central Airlines was a local service carrier, a scheduled passenger airline operating in Arkansas, Colorado, Kansas, Missouri, Oklahoma, and Texas from 1949 to 1967. It was founded by Keith Kahle in 1944 to operate charter and fixed base services in Oklahoma, but was not granted an air operator's certificate until 1946 and did not begin scheduled flights until September 15, 1949, just before ...
Logan Sapphire. Star of Bombay, given to Mary Pickford by Douglas Fairbanks, Sr. Star of India. Stuart Sapphire. Black Star of Queensland. Star of Adam, with a weight of 1,404.49 carats (280.898 g), it is the largest star sapphire in the world. Queen Marie of Romania Sapphire.
Gemstone. Group of precious and semiprecious stones—both uncut and faceted—including ( clockwise from top left) diamond, uncut synthetic sapphire, ruby, uncut emerald, and amethyst crystal cluster. A gemstone (also called a fine gem, jewel, precious stone, semiprecious stone, or simply gem) is a piece of mineral crystal which, when cut or ...