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2. List of U.S. state minerals, rocks, stones and gemstones

   en.wikipedia.org/wiki/List_of_U.S._state...

   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 ...

3. Gemstone - Wikipedia

   en.wikipedia.org/wiki/Gemstone

   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 ...

4. Gemological Institute of America - Wikipedia

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

   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 evaluate ...

5. 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 ...

6. List of gemstones by species - Wikipedia

   en.wikipedia.org/wiki/List_of_gemstones_by_species

   Download QR code; Wikidata item; Print/export Download as PDF; Printable version; In other projects ... There are a number of organic materials used as gems ...

7. Mashamoquet Brook State Park - Wikipedia

   en.wikipedia.org/wiki/Mashamoquet_Brook_State_Park

   Mashamoquet Brook State Park (/ mæʃˈmʌkɪt -/ mash-MUH-kit) is a public recreation area in the town of Pomfret, Connecticut. Notable features of the state park include the Wolf Den national historic site, the Brayton Grist Mill, and the Table Rock and Indian Chair natural stone formations. The state park offers facilities for camping ...

8. Gemological Science International - Wikipedia

   en.wikipedia.org/wiki/Gemological_Science...

   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] Founded in New York City in 2005 by Mark Gershburg and Debbie Azar, [4][5][6][7] GSI's laboratory division provides diamond ...

9. Jewellery - Wikipedia

   en.wikipedia.org/wiki/Jewellery

   Jewellery. Jewellery (or jewelry in American English) consists of decorative items worn for personal adornment such as brooches, rings, necklaces, earrings, pendants, bracelets, and cufflinks. Jewellery may be attached to the body or the clothes. From a western perspective, the term is restricted to durable ornaments, excluding flowers for example.