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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 ...
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They also replaced December's lapis with zircon and switched the primary/alternative gems for March. The American Gem Trade Association added tanzanite as a December birthstone in 2002. [ 5 ] In 2016, the American Gem Trade Association and Jewelers of America added spinel as an additional birthstone for August. [ 6 ]
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 ...
The first theme is using legendary luminous gems to illuminate buildings, for navigation lights on ships, or sometimes as guiding lights for lost persons (Ball 1938: 498–500). In India, the earliest country in which fine gemstones were known, belief in luminous gems dates back some twenty-five centuries.
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 ]
Star of India (gem) The Star of India is a 563.35- carat (112.67 g) star sapphire, one of the largest such gems in the world. [ 1][ a] It is almost flawless and is unusual in that it has stars on both sides of the stone. The greyish-blue gem was mined in Sri Lanka [ 3] and is housed in the American Museum of Natural History in New York City .
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.