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2. Diamond (gemstone) - Wikipedia

   en.wikipedia.org/wiki/Diamond_(gemstone)

   Diamond [a] is a gemstone formed by cutting a raw diamond. Diamonds are one of the best-known and most sought-after gems, and they have been used as decorative items since ancient times. The hardness of diamond and its high dispersion of light —giving the diamond its characteristic "fire"—make it useful for industrial applications and ...

3. Jet (gemstone) - Wikipedia

   en.wikipedia.org/wiki/Jet_(gemstone)

   Jet is a type of lignite, [1] the lowest rank of coal, and is a gemstone. Unlike many gemstones, jet is not a mineral, but is rather a mineraloid. [2] It is derived from wood that has changed under extreme pressure. The English noun jet derives from the French word for the same material, jaiet (modern French jais ), ultimately referring to the ...

4. Yogo sapphire - Wikipedia

   en.wikipedia.org/wiki/Yogo_sapphire

   "Yogo sapphire" is the preferred term for gems found in the Yogo Gulch, whereas "Montana sapphire" generally refers to gems found in other Montana locations. More gem-quality sapphires are produced in Montana than anywhere else in North America. Sapphires were first discovered in Montana in 1865, in alluvium along the Missouri River. Finds in ...

5. Gemological Institute of America - Wikipedia

   en.wikipedia.org/wiki/Gemological_Institute_of...

   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 ...

6. List of Hartford County towns and villages - Wikipedia

   en.wikipedia.org/wiki/List_of_Hartford_County...

   Birchwood. Bishop's Corner (a neighborhood of West Hartford) Bloomfield (Town) Blue Hills (a village of Bloomfield) Brainerd Park. Breakneck. Bristol (City) Broad Acres. Broad Brook.

7. List of municipalities in Connecticut - Wikipedia

   en.wikipedia.org/wiki/List_of_municipalities_in...

   The U.S. state of Connecticut is divided into 169 municipalities, including 19 cities, 149 towns and one borough, which are grouped into eight historical counties, as well as nine planning regions which serve as county equivalents . Towns traditionally have a town meeting form of government; under the Home Rule Act, however, towns are free to ...