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This is a list of gemstones, ... Rock crystal (var.) Shocked quartz (var.) Smoky quartz ... (Top) 1 Minerals. Toggle Minerals subsection. 1.1 A–B.
Menshikov Ruby, the world's second largest spinel set on top of the Great Imperial Crown of Russia; Timur Ruby, believed to be a ruby until 1851, hence its name; Black Prince's Ruby, the famous spinel mounted on the Imperial State Crown of the United Kingdom
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 ...
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 ...
Duds and diamonds. Not all finds are precious stones. Johnson tries to dissuade some rock hounds from slicing open stones he knows are duds. “You don’t really want to waste time cutting this ...
This is a list of minerals which have Wikipedia articles. Minerals are distinguished by various chemical and physical properties. Differences in chemical composition and crystal structure distinguish the various species .
The merging of the 'ARD List' (approved, revalidated and discredited) with the 'GQN List' resulted in the first 'IMA/CNMNC List of Mineral Names'. The 2007 draft of the 'IMA/CNMNC List of Mineral Names' was a courtesy of the Materials Data, Inc. (MDI), its 2009 review had important modifications.
The meteorite is the oldest known rock originating from Earth, being approximately 4 billion years old. Big Muley: Lunar Sample Laboratory Facility, Houston, Texas, United States: Anorthosite Moon rock collected by Apollo 16 astronauts. It is approximately 3.9 billion years old and is the largest Moon rock brought from the Moon. Black Rock