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The Chambersburg Area School District is a public school district located in Franklin County, Pennsylvania. The district encompasses approximately 250 square miles, including the borough of Chambersburg, plus the townships of Hamilton, Greene, Lurgan, and Letterkenny, and a portion of Guilford Township. It operates the following schools: Andrew ...
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, they occur in other colors, including gray and black, and also can be colorless. A pinkish orange variety of sapphire is called padparadscha .
Synthetic sapphire – single-crystal aluminum oxide (sapphire – Al 2 O 3) is a transparent ceramic. Transparent ceramics have recently acquired a high degree of interest and notoriety. Basic applications include lasers and cutting tools, transparent armor windows, night vision devices (NVD), and nose cones for heat seeking missiles.
The front of Chambersburg Area Senior High School. Gov. Josh Shapiro's proposed 2024-25 budget includes an increase of over $1 billion in basic education funding, according to the Department of ...
Ruspoli Sapphire: 136.9 carats (27.38 g) Stuart Sapphire: Sri Lanka 104 carats (20.8 g) Blue Tower of London: Bismarck Sapphire: Myanmar: 98.56 carats (19.712 g) Table Blue National Museum of Natural History, Washington James J. Hill Sapphire: 22.66 carats (4.532 g) Cornflower National Museum of Natural History, Washington
Cardinal gem. 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 and rarity. [1] The term has largely fallen out of use.
Sapphirine. Sapphirine is a rare mineral, a silicate of magnesium and aluminium, with the chemical formula ( Mg, Al)8(Al, Si)6 O 20 (with iron as a major impurity). Named for its sapphire -like colour, sapphirine is primarily of interest to researchers and collectors: well-formed crystals are treasured and occasionally cut into gemstones.
Sapphire (color) The 423-carat (85 g) blue Logan Sapphire. Sapphire is a saturated shade of blue, referring to the gemstone of the same name. Sapphire gems most commonly occur in a range of blue shades, although they can come in many different colors. Other names for variations of the color sapphire are blue sapphire or sapphire blue, shown below.