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An early use of the piezoelectricity of quartz crystals was in phonograph pickups. One of the most common piezoelectric uses of quartz today is as a crystal oscillator. The quartz oscillator or resonator was first developed by Walter Guyton Cady in 1921. [86] [87] George Washington Pierce designed and patented quartz crystal oscillators in 1923.
Citrine “A powerful gemstone crystal in a range of deep yellows, oranges, and yellow-cream-white, the citrine gemstone is said to bring abundance and wealth into one’s life,” Salzer says.
The term three phase relates to the three phases of matter, solid, liquid, and gas. This is a three phase inclusion in rock crystal quartz. The solid is a black material that is of bituminous origin. The liquid encased is petroleum, and the gas bubble is methane. Inclusions are one of the most important factors when it comes to gem valuation.
Another treatment method that is commonly used to treat gemstones is bleaching. This method uses a chemical in order to reduce the colour of the gem. After bleaching, a combination treatment can be done by dying the gemstone once the unwanted colours are removed. Hydrogen peroxide is the most commonly used product used to alter gemstones and ...
Crystal is a transparent mineral resembling glass, most probably a variety of quartz. Job places it in the same category with gold, onyx, sapphire, glass, coral, topaz, etc. The Targum renders the qrt of Ezech. as "ice"; the other versions translate it as "crystal". Crystal is again mentioned in Apoc., iv, 6; xxi, 11; xxii, 1.
Rose quartz (var.) Rock crystal (var.) Shocked quartz (var ... There are a number of artificial and lab grown minerals used to produce gemstones. These include: Lab ...
Rutilated quartz used as a gemstone. Rutilated quartz is a variety of quartz which contains acicular (needle-like) inclusions of rutile. [1] It is used for gemstones. These inclusions mostly look golden, but they also can appear silver, copper red or black.
A stone is ground into shape (often a cabochon or a short, wide cylinder) and polished to a shine. Sometimes the flat surface is engraved with a religious motto in Arabic, which is sometimes inlaid with gold. The finished gem is then mounted on a ring according to the stones finished size. Both men and women wear aqiq rings as jewellery.
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