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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 ...
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 ...
Description. This template is an Image map of the planning regions of Connecticut. It is currently set to display as a right-sided thumbnail with a size of 250px Usage. This template accepts one variable to change the size of the ImageMap, which must be input as a number followed by px, for example:
The garnet family is one of the most complex in the gem world. It is not a single species, but is composed of multiple species and varieties. [ 54 ] It is the state mineral of Connecticut, [ 55 ] New York's gemstone, [ 56 ] and star garnet (garnet with rutile asterisms) is the state gemstone of Idaho. [ 57 ]
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 ...
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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 ...
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