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It is typically blue, but natural "fancy" sapphires also occur in yellow, purple, orange, and green colors; "parti sapphires" show two or more colors. The only color corundum stone that the term sapphire is not used for is red, which is called a ruby. [1] Pink colored corundum may be either classified as ruby or sapphire depending on locale.
An uncut/rough yellow sapphire found at the Spokane Sapphire Mine near Helena, Montana "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. [18] More gem-quality sapphires are produced in Montana than anywhere else in North America. [18]
An uncut, rough yellow sapphire found at the Spokane Sapphire Mine near Helena, Montana. Sapphire is one of the two gem-varieties of corundum, the other being ruby (defined as corundum in a shade of red). Although blue is the best-known sapphire color, it occurs in other colors, including gray and black, and also can be colorless.
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In a Louis Vuitton peplum gown and a diamond necklace with a yellow sapphire at the center. Kevin Mazur - Getty Images. Gabrielle Union-Wade.
The five cardinal gems. Clockwise from top: sapphire, ruby, emerald, amethyst, diamond. Cardinal gems are gemstones which have traditionally been considered precious above all others. The classification of the cardinal gems dates back to antiquity, and was largely determined by ceremonial or religious use as well as rarity. [1]
[1] Some geuda varieties turn to a blue color after heat treatments. Others turn to red after oxidizing. Kowangu pushparaga turns to yellow sapphire after oxidizing. After heating geuda to roughly 1800 °C, the aluminium oxide lattice-work of the gem is disrupted and cooling greatly improves both color and clarity. Though many stones are ...
Epps, 51, also faced an internal affairs investigation into her overtime, sources said. Records showed that last year she worked nearly 1,627 hours of overtime on top of her regular shift, or an ...
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